阅读说明：本技术 基于北斗定位的施工现场全景管控显示方法及系统 (Construction site panoramic management and control display method and system based on Beidou positioning ) 是由 郑清秋 王杰 常业图 肖绎霖 许华锋 于 2021-09-02 设计创作，主要内容包括：本发明涉及施工现场数据管理技术领域,涉及一种基于北斗定位的施工现场全景管控显示方法及系统。该方法包括：步骤S1,建立施工现场的电子地图并进行显示；步骤S2,建立预期建筑物的BIM外壳并与电子地图进行坐标对齐后显示；步骤S3,按工期进程采集每个工期节点的三维倾斜摄影模型并对齐至电子地图中后显示；步骤S4,基于三维倾斜摄影模型建立施工现场的二维正射影像模型,并对齐至电子地图中后显示；步骤S5,实时采集施工现场的所有现场人员的坐标并标注于二维正射影像模型中后进行显示；步骤S6,实时采集施工现场的施工设备的坐标并标注于二维正射影像模型中后进行显示。该系统用于实现上述方法。本发明能够较佳地对现场数据进行融合展示。(The invention relates to the technical field of construction site data management, in particular to a construction site panoramic management and control display method and system based on Beidou positioning. The method comprises the following steps: step S1, establishing and displaying an electronic map of a construction site; step S2, building BIM shell of expected building and displaying after coordinate alignment with electronic map; step S3, collecting the three-dimensional oblique photography model of each construction period node according to the construction period progress, aligning the three-dimensional oblique photography model to an electronic map and displaying the three-dimensional oblique photography model; step S4, establishing a two-dimensional orthographic image model of a construction site based on the three-dimensional oblique photography model, aligning the two-dimensional orthographic image model to an electronic map and displaying the two-dimensional orthographic image model; step S5, collecting coordinates of all site personnel of a construction site in real time, marking the coordinates in a two-dimensional orthophoto model and displaying the coordinates; and step S6, acquiring the coordinates of the construction equipment of the construction site in real time, marking the coordinates in the two-dimensional orthographic projection image model and displaying the coordinates. The system is used for realizing the method. The invention can better perform fusion display on the field data.)

1. A construction site panoramic management and control display method based on Beidou positioning comprises the following steps:

step S1 is to create and display an electronic map P of the construction site, where P is { P ═ P_i(x_i y_i z_i)|i∈N⁺}；

Step S2, building BIM shell of expected building, aligning with the coordinate of electronic map P, and displaying;

step S3, collecting the three-dimensional oblique photography model of each construction period node according to the construction period progress, aligning the three-dimensional oblique photography model to an electronic map P, and displaying the three-dimensional oblique photography model;

step S4, establishing a two-dimensional orthographic image model of a construction site based on the three-dimensional oblique photography model, aligning the two-dimensional orthographic image model to an electronic map P and displaying the two-dimensional orthographic image model;

step S5, collecting coordinates of all site personnel of a construction site in real time, marking the coordinates in a two-dimensional orthophoto model and displaying the coordinates;

and step S6, acquiring the coordinates of the construction equipment of the construction site in real time, marking the coordinates in the two-dimensional orthographic projection image model and displaying the coordinates.

2. The construction site panoramic management and control display method based on Beidou positioning according to claim 1, is characterized in that: in the step S3, in the step S,also comprises the display of the project progress A and the project expected completion rate B, wherein, C_nEngineering index value of three-dimensional oblique photography model representing nth construction period node, C_n-1An engineering index value of the three-dimensional oblique photography model representing the (n-1) th construction period node, C represents an expected engineering index value,representing the node expectation progress from the (n-1) th construction period node to the nth construction period node.

3. The construction site panoramic management and control display method based on Beidou positioning according to claim 1, is characterized in that: in step S3, slicing the three-dimensional oblique photography model and generating a slice image set M, where the slice image set P is aligned to the electronic map P by an angle; angle, M, representing the jth view angle_jRepresenting a three-dimensional oblique photography model inAnd (5) projecting pictures under the visual angles, wherein m is the total number of the visual angles.

4. The construction site panoramic management and control display method based on Beidou positioning according to claim 1, is characterized in that: in step S5, the image data of all the persons on site are also collected in real time at the same time, and displayed in the electronic map P in association with the coordinates of the corresponding persons on site.

5. The construction site panoramic management and control display method based on Beidou positioning according to claim 1, is characterized in that: in step S6, the image data of all the construction equipment is also collected in real time at the same time, and displayed in the electronic map P in association with the coordinates of the corresponding construction equipment.

6. Job site panorama management and control display system based on big dipper location, it includes:

the electronic map module is used for generating an electronic map P;

a BIM housing creation module for generating a BIM housing;

the Beidou positioning module is used for acquiring coordinates of field personnel and construction equipment;

the three-dimensional oblique photography model establishing module is used for generating a three-dimensional oblique photography model and a two-dimensional orthographic image model;

a slicing module for generating a slice picture set M;

the processing platform module is used for receiving data of the electronic map module, the BIM shell establishing module, the Beidou positioning module, the three-dimensional oblique photography model establishing module and the slicing module and aligning the data to the electronic map; and

and the display module is used for realizing the display of the related data.

Technical Field

The invention relates to the technical field of construction site data management, in particular to a construction site panoramic management and control display method and system based on Beidou positioning.

Background

In recent years, with the large-area application of the intelligent construction site platform in a construction site, data collected on the construction site comprise Beidou positioning data and videos, microclimate, BIM, three-dimensional oblique photography models and the like, the intelligent construction site platform has the characteristics of multiple types and large data volume, and various data are difficult to fuse, so that the current intelligent construction site platform is only used for simply stacking and displaying various data, the data fusion depth is not deep, historical information cannot be displayed, the critical progress of managers cannot be directly pushed, people and machinery, the field condition information such as vehicles and materials is difficult to realize the panoramic management and control of the construction site.

Disclosure of Invention

The invention provides a construction site panoramic management and control display method based on Beidou positioning, which can overcome certain defects in the prior art.

The construction site panoramic management and control display method based on Beidou positioning comprises the following steps:

step S1 is to create and display an electronic map P of the construction site, where P is { P ═ P_i(x_i y_i z_i)|i∈N⁺}；

Step S2, building BIM shell of expected building, aligning with the coordinate of electronic map P, and displaying;

step S3, collecting the three-dimensional oblique photography model of each construction period node according to the construction period progress, aligning the three-dimensional oblique photography model to an electronic map P, and displaying the three-dimensional oblique photography model;

step S4, establishing a two-dimensional orthographic image model of a construction site based on the three-dimensional oblique photography model, aligning the two-dimensional orthographic image model to an electronic map P and displaying the two-dimensional orthographic image model;

step S5, collecting coordinates of all site personnel of a construction site in real time, marking the coordinates in a two-dimensional orthophoto model and displaying the coordinates;

and step S6, acquiring the coordinates of the construction equipment of the construction site in real time, marking the coordinates in the two-dimensional orthographic projection image model and displaying the coordinates.

In the invention, the electronic map P is established and displayed through the step S1, so that the whole display of the construction site can be better realized; through the step S2, the BIM housing of the expected building can be aligned with the electronic map P for displaying, so that the form of the expected building can be displayed better; through the step S3, the construction progress of the current construction site can be preferably aligned to the electronic map P at each construction period node, so that the display of the project progress can be preferably realized; through the steps of S4 and S5, the real-time display and management of field personnel can be preferably realized; through the steps S4 and S6, the construction equipment can be preferably displayed and managed.

Through the steps S1-S6, fusion and display of various data of a construction site can be better realized, and visual display and management of project progress, personnel, equipment and the like can be better realized.

Preferably, the step S3 further includes displaying the project progress a and the project expected completion rate B,wherein, C_nEngineering index value of three-dimensional oblique photography model representing nth construction period node, C_n-1An engineering index value of the three-dimensional oblique photography model representing the (n-1) th construction period node, C represents an expected engineering index value,representing the node expectation progress from the (n-1) th construction period node to the nth construction period node. Therefore, the visual display of the project process A and the project expected completion rate B can be better realized.

Preferably, in step S3, the three-dimensional oblique photography model is sliced to generate a slice image set M, and the slice image set P is angularly aligned to the electronic map P;angle, M, representing the jth view angle_jRepresenting a three-dimensional oblique photography model inAnd (5) projecting pictures under the visual angles, wherein m is the total number of the visual angles. Therefore, data display from different angles can be preferably realized, and light display can be preferably realized by generating the slice picture set M and aligning the slice picture set M for display.

Preferably, in step S5, the image data of all the persons on the site are also acquired in real time at the same time, and displayed in the electronic map P in association with the coordinates of the corresponding persons on the site. Therefore, the display of the image data of the personnel can be better realized.

Preferably, in step S6, the image data of all the construction equipment is also acquired in real time at the same time, and is displayed in the electronic map P in association with the coordinates of the corresponding construction equipment. Therefore, the display of the image data of the construction equipment can be better realized.

In addition, based on any one of the above systems, the invention also provides a construction site panoramic management and control display system based on Beidou positioning, which comprises:

the electronic map module is used for generating an electronic map P;

a BIM housing creation module for generating a BIM housing;

the Beidou positioning module is used for acquiring coordinates of field personnel and construction equipment;

the three-dimensional oblique photography model establishing module is used for generating a three-dimensional oblique photography model and a two-dimensional orthographic image model;

a slicing module for generating a slice picture set M;

the processing platform module is used for receiving data of the electronic map module, the BIM shell establishing module, the Beidou positioning module, the three-dimensional oblique photography model establishing module and the slicing module and aligning the data to the electronic map; and

and the display module is used for realizing the display of the related data.

By the system, fusion display of multiple data in a construction site can be better realized.

Drawings

Fig. 1 is a schematic block diagram of a construction site panoramic management and control display system based on Beidou positioning in embodiment 1;

fig. 2 is a schematic diagram of a positioning system and method in embodiment 2.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the invention and not limiting.

Example 1

With reference to fig. 1, the embodiment provides a construction site panoramic management and control display method based on Beidou positioning, which includes the following steps:

step S1 is to create and display an electronic map P of the construction site, where P is { P ═ P_i(x_i y_i z_i)|i∈N⁺}；

Step S2, building BIM shell of expected building, aligning with the coordinate of electronic map P, and displaying;

step S3, collecting the three-dimensional oblique photography model of each construction period node according to the construction period progress, aligning the three-dimensional oblique photography model to an electronic map P, and displaying the three-dimensional oblique photography model;

step S4, establishing a two-dimensional orthographic image model of a construction site based on the three-dimensional oblique photography model, aligning the two-dimensional orthographic image model to an electronic map P and displaying the two-dimensional orthographic image model;

step S5, collecting coordinates of all site personnel of a construction site in real time, marking the coordinates in a two-dimensional orthophoto model and displaying the coordinates;

and step S6, acquiring the coordinates of the construction equipment of the construction site in real time, marking the coordinates in the two-dimensional orthographic projection image model and displaying the coordinates.

In this embodiment, the electronic map P is created and displayed in step S1, so that the overall display of the construction site can be preferably realized; through the step S2, the BIM housing of the expected building can be aligned with the electronic map P for displaying, so that the form of the expected building can be displayed better; through the step S3, the construction progress of the current construction site can be preferably aligned to the electronic map P at each construction period node, so that the display of the project progress can be preferably realized; through the steps of S4 and S5, the real-time display and management of field personnel can be preferably realized; through the steps S4 and S6, the construction equipment can be preferably displayed and managed.

Through the steps S1-S6, fusion and display of various data of a construction site can be better realized, and visual display and management of project progress, personnel, equipment and the like can be better realized.

In step S3 of the present embodiment, the method further includes displaying the project progress a and the project expected completion rate B,wherein, C_nEngineering index value of three-dimensional oblique photography model representing nth construction period node, C_n-1An engineering index value of the three-dimensional oblique photography model representing the (n-1) th construction period node, C represents an expected engineering index value,representing the node expectation progress from the (n-1) th construction period node to the nth construction period node. Therefore, the visual display of the project process A and the project expected completion rate B can be better realized.

In step S3 of the present embodiment, a three-dimensional oblique photography model is sliced, and a slice image set M is generated, and the slice image sets P are aligned to an electronic map P by an angle;angle, M, representing the jth view angle_jRepresenting a three-dimensional oblique photography model inProjection view under visual angleAnd m is the total number of viewing angles. Therefore, data display from different angles can be preferably realized, and light display can be preferably realized by generating the slice picture set M and aligning the slice picture set M for display.

In step S5 of this embodiment, the image data of all the persons on site are also simultaneously collected in real time, and are displayed in the electronic map P in association with the coordinates of the corresponding persons on site. Therefore, the display of the image data of the personnel can be better realized.

In step S6 of this embodiment, the image data of all the construction equipment is also collected in real time at the same time, and is displayed in the electronic map P in association with the coordinates of the corresponding construction equipment. Therefore, the display of the image data of the construction equipment can be better realized.

For realizing the method in this embodiment, this embodiment also provides a construction site panorama management and control display system based on big dipper location, and it includes:

the electronic map module is used for generating an electronic map P;

a BIM housing creation module for generating a BIM housing;

the Beidou positioning module is used for acquiring coordinates of field personnel and construction equipment;

the three-dimensional oblique photography model establishing module is used for generating a three-dimensional oblique photography model and a two-dimensional orthographic image model;

a slicing module for generating a slice picture set M;

the processing platform module is used for receiving data of the electronic map module, the BIM shell establishing module, the Beidou positioning module, the three-dimensional oblique photography model establishing module and the slicing module and aligning the data to the electronic map; and

and the display module is used for realizing the display of the related data.

By the system of the embodiment, fusion display of multiple data in a construction site can be better realized.

Example 2

In view of the fact that the Beidou positioning and positioning system is higher in positioning accuracy of a plane coordinate and poorer in positioning of a height coordinate, the embodiment provides a high-accuracy positioning method based on Beidou positioning and barometer, and the plane coordinate acquired by the Beidou positioning module and the altitude acquired by the barometer can be used as measurement coordinates of a coordinate point. Of course, it can be understood that the electronic map at the electronic map module is constructed such that the height coordinate of any point is expressed in altitude.

As shown in fig. 2, the present embodiment provides a high-precision positioning method based on Beidou positioning and a barometer, which includes the following steps:

s1, acquiring plane coordinates (x, y) of the current coordinate point based on the Beidou positioning module;

step S2, acquiring the height coordinate z of the current coordinate point based on the barometer;

in step S3, (x, y, z) is output as the coordinates of the current coordinate point.

Through the method in the embodiment, the plane coordinate provided by the Beidou positioning module and the height coordinate acquired by the barometer can be preferably used as the current coordinate point and output, so that better measurement accuracy can be achieved.

Step S2 of this embodiment specifically includes the following steps:

step S21, establishing a climate model, wherein the climate model is used for representing the corresponding relation between the weather information sequence at the historical moment and the sea level air pressure value;

step S22, acquiring a time meteorological information sequence of the current time based on the Beidou positioning module, and judging historical sea level air pressure values under the historical time with the most similar time meteorological information sequence and the current time from the weather model based on similarity;

step S23, comparing the current reference air pressure in the barometer with the historical sea level air pressure value obtained in the step S22, if the comparison result is within the set error range, using the current reference air pressure value as the reference air pressure of the barometer, and if the comparison result exceeds the set error range, using the historical sea level air pressure value as the reference air pressure of the barometer;

in step S24, the barometer obtains the barometric pressure value of the current altitude and obtains the altitude of the current coordinate point in combination with the reference barometric pressure as the altitude coordinate z.

By establishing a climate model, the current reference air pressure in the barometer can be compared with the sea level air pressure value at the historical moment with the same or similar meteorological conditions, an error range can be set, and if the comparison result is within the error range, the current reference air pressure is judged to be effective, so that the altitude of the current coordinate point is calculated; if the comparison result exceeds the error range, the current reference air pressure can be replaced by the historical sea level air pressure value, and the altitude of the current coordinate point is calculated; therefore, the measurement accuracy of the barometer can be improved better.

It is understood that the barometer is an existing device that obtains the height of the current measurement position based on the air pressure-height formula by comparing the measured air pressure value with the reference air pressure value when measuring the height. The most significant source of measurement error is the variation in the baseline barometric pressure value. The sea level atmospheric pressure value, which is the reference atmospheric pressure value, is influenced not only by the weather conditions at the present time but also by the time, i.e., the daily deterioration. By the method in the embodiment, the sea level air pressure value under the historical meteorological conditions of the same region can be preferably used as a reference to correct the reference air pressure of the barometer, so that the output accuracy of the barometer can be preferably improved.

In this embodiment, can acquire the meteorological information of current moment through big dipper orientation module to can construct the meteorological information sequence of current moment based on this. Then the weather information sequence at the moment can be input into the weather model, so that the weather information sequence at the moment at the historical moment which is most similar to the weather information sequence at the moment at the current moment is matched, and then the historical air pressure value at the corresponding historical moment can be output, so that the comparison between the historical sea level air pressure value and the current reference air pressure can be preferably realized.

In step S22 of the present embodiment, the current time weather information sequence is matched with the historical time weather information sequence, and after the most similar historical time weather information sequence is matched, the climate model can output the historical time and the historical sea level air pressure value corresponding to the historical time weather information sequence. Therefore, the rule for determining the error range in the present embodiment can be based on the following:

1. judging whether the time difference between the historical time and the current time reaches a set time threshold value, such as 30 min;

2. and judging whether the air pressure difference between the historical sea level air pressure value and the current reference air pressure reaches a set air pressure threshold value, such as 0.05 hPa.

If the rule 1 is not satisfied (that is, the difference value does not reach the set threshold), it indicates that the historical time to which the time weather information sequence of the historical time most similar to the current time weather information sequence matched in the historical data belongs is within the allowable error with the current time, that is, the matched time weather information sequence of the historical time is valid, and the historical sea level air pressure value corresponding to the time weather information sequence of the historical time can be used as a reference to be compared with the current reference air pressure.

If rule 1 is not satisfied, and if rule 2 is not satisfied (i.e., the difference value does not reach the set threshold), it indicates that the current reference air pressure is valid and can be used as the reference air pressure of the barometer.

If the rule 1 is not satisfied, if the rule 2 is satisfied (that is, the difference value reaches the set threshold), it indicates that the current reference barometric pressure is invalid, and the corresponding historical sea level barometric pressure value is used as the reference barometric pressure of the barometer.

If the rule 1 is satisfied (that is, the difference value reaches the set threshold), the historical time to which the weather information sequence of the matched historical time belongs and the current time exceed the allowable error range are described; i.e. not matching to a historical time similar to the meteorological conditions at the current time. At this time, the reference pressure P of the barometer is calculated and obtained according to the following formula_ref：

In the above formula, U represents the number of years included in the history data, L_τRepresenting historical sea level barometric pressure values at the same historical time as the current time,represents L_τWeight of (e ∈)_τAnd the Euclidean distance between the time meteorological information sequence at the current time and the time meteorological information sequence at the historical time at the same time.

Based on the above, it is preferable that the historical sea level barometric pressure values at all the historical times at the same time are weighted and calculated, and the result is used as the reference barometric pressure P of the barometer_ref。

Through the method, the influence of weather conditions and daily poor weather conditions on the reference air pressure can be fully considered, so that the reference air pressure of the barometer can be better calibrated, and the measurement accuracy can be better improved.

Step S21 of the present embodiment specifically includes the following steps,

step S211, collecting a meteorological information set W of the previous U years of the area where the construction site is located, wherein W is { W ═ W }_α|α＝1,2,3,…,U}，W_αIs the annual meteorological information sequence of the alpha year; w_α＝{G_αβ|α＝1,2,3，…，U；β＝1，2，3，…，365}，G_αβA solar weather information sequence of day beta of the alpha year; g_αβ＝{L_αβγ|α＝1，2，3,…，U；β＝1,2,3,…,365；γ＝1,2，3,…,q}，L_αβγIs a meteorological information sequence of the time of the alpha, beta, gamma, day of the alpha year, and q is the length of the time sequence;

step S212, cleaning the data in the meteorological information set W;

step S213, establishing a climate model Cl, wherein the climate model Cl is used for establishing a meteorological information set L at the beta-th day and the gamma-th moment of the alpha year_αβγSea level air pressure value AT corresponding to the time of day [ gamma ] of day [ alpha ] of year_αβγIn the middle ofIn the formula, wherein Cl { (L)_αβγ，AT_αβγ)|α＝1,2,3,…,U；β＝1,2，3,…,365；γ＝1,2,3,…,q}。

The establishment of the climate model Cl can be preferably realized.

In this embodiment, the value of U can be 20 years.

Step S212 of this embodiment specifically includes the following steps,

step S212a, carrying out rough cleaning on the data in the meteorological information set W based on Fourier series fitting, and further removing annual meteorological information sequence W_αIn the sequence of weather information G judged as noise_αβ；

Step S212b, the data in the meteorological information set W is finely cleaned based on the confidence level, and then the daily weather information sequence G is eliminated_αβTime weather information sequence L of middle judgment as noise_αβγ。

Through the above, noise can be eliminated better, so that the measurement precision can be improved better.

Step S212a of the present embodiment specifically includes the following steps,

step S212a1, weather information sequence G_αβThe daily sequence of each meteorological index is subjected to Fourier series fitting, the fitting formula is as follows,

wherein Q is_αβ(beta) is a solar weather information sequence G_αβA fitting function of a specific index of (1); a. the_lAnd B_lFourier coefficients are obtained by fitting; l is expressed as Fourier order, and p is the value of the Fourier order; omega_lThe value is a multiple of 4 for a preset parameter;

step S212a2, for any specific meteorological index, fitting Q of function_αβA in (. beta.) A_lAnd B_lIf the sun weather information is within the set threshold value, the sun weather information sequence G of the corresponding day is determined_αβAnd judging as noise and eliminating.

Through the method, the day parameters which have little influence on the year parameters can be better eliminated, so that invalid data can be better eliminated, and the size of the data is reduced.

Wherein, the value of l can be 4 or 8.

Here, the threshold set in S212a2 can be set to a constant such as 0.05.

By the step S212a2, A can be eliminated_lAnd B_lSolar weather information sequence G approaching zero_αβTherefore, the day parameters which have little influence on the year parameters can be better rejected.

Step S212b of the present embodiment specifically includes the following steps,

step S212b1, based on the formulaFor each solar weather information sequence G_αβTime weather information sequence L_αβγCalculating the confidence level Ul of the specific meteorological index in (1);in the sequence of solar weather information G for corresponding specific weather indicators_αβThe mean value of delta is the weather information sequence G corresponding to the specific weather index_αβStandard deviation of (2).

Step S212b2, for any time meteorological information sequence L_αβγIf a specific meteorological index numerical value with the confidence level Ul lower than 0.95 exists, the corresponding time meteorological information sequence L is determined_αβγAnd judging as noise and eliminating.

By the above, the daily weather information sequence G can be preferably corrected_αβProcessing the data to eliminate invalid time meteorological information sequence L_αβγThus, data cleansing can be preferably achieved.

In this embodiment, the time weather information sequence is a numerical sequence of a plurality of weather indicators, the day weather information sequence is a sequence of time weather information sequences of all times of the day, and the year weather information sequence is a sequence of day weather information sequences of all days of the year. Therefore, a multi-index time meteorological information sequence can be constructed, and the data processing precision can be improved better.

In this embodiment, the plurality of meteorological parameters include one or more of temperature, humidity, wind direction, wind speed, and solar radiation. It is possible to preferably consider various factors that affect the air pressure.

In this embodiment, in step S22, the similarity determination is performed on the time weather information sequence based on the euclidean distance. The similarity determination can be preferably realized.

To further illustrate the method in this example, a specific example is described below.

In this particular embodiment, the temperature (Pm) is selected¹) Humidity (Pm)²) Wind direction (Pm)³) Wind speed (Pm)⁴) And solar radiation (Pm)⁵) And constructing a time meteorological information sequence as a meteorological index.

Time weather information sequence L for one historical time_αβγIt is then:

wherein the content of the first and second substances,andrespectively indicate the temperature (Pm) at the time of day [ gamma ] on day [ beta ] of the year [ alpha ]¹) Humidity (Pm)²) Wind direction (Pm)³) Wind speed (Pm)⁴) And solar radiation (Pm)⁵) The numerical value of (c).

The time weather information sequence of the current time t can be expressed as:

wherein the content of the first and second substances,andrespectively representing the temperature (Pm) at the current time t¹) Humidity (Pm)²) Wind direction (Pm)³) Wind speed (Pm)⁴) And solar radiation (Pm)⁵) The numerical value of (c).

Therefore, when performing similarity matching, the calculation formula of the similarity (euclidean distance) is:

the similarity between the current time weather information sequence and the historical time weather information sequence is calculated one by one, and the time weather information sequence with the minimum similarity is the matched historical time weather information sequence.

Wherein, for a weather information sequence G_αβIt is then:

therefore, in step S212a1, the daily sequence of each weather indicator is the temperature (Pm)¹) Humidity (Pm)²) Wind direction (Pm)³) Wind speed (Pm)⁴) And solar radiation (Pm)⁵) The number of the current day value of (1) is the number sequence of the time of day. Namely:

temperature (Pm)¹) The daily sequence of the meteorological indexes is as follows:

humidity (Pm)²) The daily sequence of the meteorological indexes is as follows:

wind direction (Pm)³) The daily sequence of the meteorological indexes is as follows:

wind speed (Pm)⁴) The daily sequence of the meteorological indexes is as follows:

solar radiation (Pm)⁵) The daily sequence of the meteorological indexes is as follows:

the step S212a1 preferably realizes the fitting of the day sequence of each weather indicator, and the Fourier coefficient A of the day sequence of any weather indicator_lAnd B_lWhen the solar weather information is within the set threshold value, the solar weather information sequence G of the day is determined_αβAnd (5) removing.

In step S212b, the confidence level is calculated for each weather indicator day series value, and if the confidence level of any weather indicator is less than 0.95, the weather information series L is determined for the time of the whole historical time of the weather indicator_αβγAnd then the samples are removed.

By the method in the embodiment, historical meteorological data can be preferably processed, a climate model is established, and the reference barometric pressure of the barometer is corrected by considering the difference between the time value of the current time and the meteorological condition and the time value of the historical time and the meteorological condition, so that the influence of the meteorological condition and the daily difference on the reference barometric pressure can be preferably and fully considered, and the positioning accuracy of the barometer can be preferably improved.

Based on the method in the embodiment, the embodiment also provides a high-precision positioning system based on Beidou positioning and barometer, which comprises a Beidou positioning module, a local processing module and a barometer, wherein the climate model is arranged at the local processing module, and the local processing module and the barometer are both arranged at the terminal equipment.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.