阅读说明：本技术 一种基于数字波束形成技术的低慢小目标探测方法 (Low-slow small target detection method based on digital beam forming technology ) 是由 张泽来 陈国栋 马明 刘忠富 于 2020-06-12 设计创作，主要内容包括：本发明公开了一种基于数字波束形成技术的低慢小目标探测方法,涉及低慢小目标探测方法技术领域,具体为一种基于数字波束形成技术的低慢小目标探测方法包括以下步骤：S1：布置窄波束天线；S2：利用窄波束天线获取目标物的坐标；S3：获取目标物的距离数值；S4：选取一个静态标准目标物为参考数值；S5：获取试验物体的平均坐标数值；S6：分析平均坐标；S7：获取目标物精准坐标。该基于数字波束形成技术的低慢小目标探测方法对目标物的测量产生多组数值,以及每组试验获取不同的平均数值,通过不同平均数值对比分析,从而得到精准的参考数值,以及为试验目标物提供标准的目标物的坐标,能够高效的探测低慢小目标的坐标。(The invention discloses a low-slow small target detection method based on a digital beam forming technology, which relates to the technical field of low-slow small target detection methods, in particular to a low-slow small target detection method based on a digital beam forming technology, and comprises the following steps: s1: arranging a narrow beam antenna; s2: acquiring coordinates of a target object by using a narrow beam antenna; s3: obtaining a distance value of a target object; s4: selecting a static standard target object as a reference value; s5: acquiring an average coordinate value of a test object; s6: analyzing the average coordinate; s7: and acquiring accurate coordinates of the target object. According to the method for detecting the low and slow small targets based on the digital beam forming technology, multiple groups of numerical values are generated for the measurement of the targets, different average numerical values are obtained from each group of tests, accurate reference numerical values are obtained through the comparison and analysis of the different average numerical values, the standard coordinates of the targets are provided for the tested targets, and the coordinates of the low and slow small targets can be efficiently detected.)

1. A low-slow small target detection method based on a digital beam forming technology is characterized by comprising the following steps:

s1: arranging narrow beam antennas, wherein three planes are arranged below the detected flight area at equal intervals, and each plane comprises at least 6 narrow beam antennas to form a three-dimensional coordinate coefficient;

s2: acquiring coordinates of a target object by using a narrow beam antenna, sequentially measuring the target object by using the narrow beam antenna, respectively acquiring numerical values of the target object in a vertical direction and a horizontal direction, and acquiring coordinates (X, Y and Z) of the target object;

s3: acquiring a distance value of a target object, forming a plurality of beams by adopting a digital beam forming technology in a pitching direction to realize pitching airspace coverage by adopting a low-altitude defense radar of the digital beam forming technology, and acquiring the distance value of the target object by using a narrow beam antenna;

s4: selecting a static standard target object as a reference value, selecting a static standard target object A, measuring the direction and different distances of the target object A by taking the target object A as the reference object, and operating a digital beam arithmetic unit to acquire collection and numerical errors;

s5: acquiring an average coordinate value of a test object; selecting three groups of detection test objects, wherein at least 3 detection test objects are arranged in each group of test objects, obtaining the measurement value of each test object, and extracting the average value of each group of test data;

s6: analyzing the average coordinate, analyzing and comparing the average data of each group of test objects, and correcting a coordinate transformation model;

s7: and acquiring the accurate coordinates of the target object, correcting the coordinate position of the target object, performing dynamic test on the test object, acquiring the dynamic coordinates of the test object, comparing the dynamic coordinates with the standard coordinates, judging the coordinate error of the test object, and ensuring the accuracy of the coordinates of the target object.

Technical Field

The invention relates to the technical field of low-slow small target detection methods, in particular to a low-slow small target detection method based on a digital beam forming technology.

Background

Digital beamforming techniques the antennas of this technique are capable of generating multiple digital beams to enable tracking of satellites, and are referred to as "digital beamforming multi-beam antennas". The device is mounted on a mobile earth station and can realize uninterrupted communication with the satellite during movement. Therefore, the technology is a key technology in mobile satellite communication and is also a key technology of an intelligent antenna in 4G mobile communication. The low-slow small target is short for low-altitude low-speed small targets, and refers to various small aircrafts or air floats with the flying height below 1km, the flying speed per hour less than 200km and the radar reflection area less than 2m 2. The prior art is difficult to realize all-weather effective detection and monitoring of low and slow small targets by using a single detection means.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a low-slow small target detection method based on a digital beam forming technology, and solves the problems that the prior art is provided for detecting the low-slow small target, the operation method is complex, the position of the target is easy to obtain errors, and the correction coefficient reference value of the target is easy to deviate.

In order to achieve the purpose, the invention is realized by the following technical scheme: a low-slow small target detection method based on a digital beam forming technology comprises the following steps:

s1: arranging narrow beam antennas, wherein three planes are arranged below the detected flight area at equal intervals, and each plane comprises at least 6 narrow beam antennas to form a three-dimensional coordinate coefficient;

s2: acquiring coordinates of a target object by using a narrow beam antenna, sequentially measuring the target object by using the narrow beam antenna, respectively acquiring numerical values of the target object in a vertical direction and a horizontal direction, and acquiring coordinates (X, Y and Z) of the target object;

s3: acquiring a distance value of a target object, forming a plurality of beams by adopting a digital beam forming technology in a pitching direction to realize pitching airspace coverage by adopting a low-altitude defense radar of the digital beam forming technology, and acquiring the distance value of the target object by using a narrow beam antenna;

s4: selecting a static standard target object as a reference value, selecting a static standard target object A, measuring the direction and different distances of the target object A by taking the target object A as the reference object, and operating a digital beam arithmetic unit to acquire collection and numerical errors;

s5: acquiring an average coordinate value of a test object; selecting three groups of detection test objects, wherein at least 3 detection test objects are arranged in each group of test objects, obtaining the measurement value of each test object, and extracting the average value of each group of test data;

s6: analyzing the average coordinate, analyzing and comparing the average data of each group of test objects, and correcting a coordinate transformation model;

s7: and acquiring the accurate coordinates of the target object, correcting the coordinate position of the target object, performing dynamic test on the test object, acquiring the dynamic coordinates of the test object, comparing the dynamic coordinates with the standard coordinates, judging the coordinate error of the test object, and ensuring the accuracy of the coordinates of the target object.

The invention provides a low-slow small target detection method based on a digital beam forming technology, which has the following beneficial effects:

the method comprises the steps of generating a plurality of groups of values for measuring the target object, obtaining different average values for each group of tests, and comparing and analyzing the different average values to obtain accurate reference values, providing standard coordinates of the target object for the test target object, and efficiently detecting the coordinates of the low-slow small target.

Drawings

FIG. 1 is a schematic diagram of a spatial transform distancing architecture according to the present invention;

fig. 2 is a block diagram of the digital beam forming principle of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1 to 2, the present invention provides a technical solution: a low-slow small target detection method based on a digital beam forming technology comprises the following steps:

s1: arranging narrow beam antennas, wherein three planes are arranged below the detected flight area at equal intervals, and each plane comprises at least 6 narrow beam antennas to form a three-dimensional coordinate coefficient;

s2: acquiring coordinates of a target object by using a narrow beam antenna, sequentially measuring the target object by using the narrow beam antenna, respectively acquiring numerical values of the target object in a vertical direction and a horizontal direction, and acquiring coordinates (X, Y and Z) of the target object;

s3: acquiring a distance value of a target object, forming a plurality of beams by adopting a digital beam forming technology in a pitching direction to realize pitching airspace coverage by adopting a low-altitude defense radar of the digital beam forming technology, and acquiring the distance value of the target object by using a narrow beam antenna;

s4: selecting a static standard target object as a reference value, selecting a static standard target object A, measuring the direction and different distances of the target object A by taking the target object A as the reference object, and operating a digital beam arithmetic unit to acquire collection and numerical errors;

s5: acquiring an average coordinate value of a test object; selecting three groups of detection test objects, wherein at least 3 detection test objects are arranged in each group of test objects, obtaining the measurement value of each test object, and extracting the average value of each group of test data;

s6: analyzing the average coordinate, analyzing and comparing the average data of each group of test objects, and correcting a coordinate transformation model;

s7: and acquiring the accurate coordinates of the target object, correcting the coordinate position of the target object, performing dynamic test on the test object, acquiring the dynamic coordinates of the test object, comparing the dynamic coordinates with the standard coordinates, judging the coordinate error of the test object, and ensuring the accuracy of the coordinates of the target object.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.