阅读说明：本技术 一种无线追踪通信系统 (Wireless tracking communication system ) 是由 李晓冬 姜玉亭 孟德明 张明 王土央 甘永莹 于 2021-05-17 设计创作，主要内容包括：本发明涉及一种无线追踪通信系统,解决的是追踪精度低的技术问题,通过采用所述无线追踪通信系统包括相互对应配合的标识印编码调制单元,标识印解调解码单元；所述标识印编码调制单元执行步骤1,对通信系统的通信数据流进行预处理；步骤2,对预处理后的信号进行时隙排序分组,每时隙组内的时隙数随机,每时隙组总时长的二分之一为时隙重心；步骤3,定义二级制编码表示主体表示信息,二进制编码的每一码元对应一个时隙组重心,若二进制码元为1,则后移对应时隙组重心；若二进制码元为0,则前移对应时隙组重心的技术方案,较好的解决了该问题,可用于无线追踪通信中。(The invention relates to a wireless tracking communication system, which solves the technical problem of low tracking precision and comprises an identification stamp coding modulation unit and an identification stamp demodulation decoding unit which are correspondingly matched with each other; the identification printing coding modulation unit executes the step 1 to preprocess the communication data stream of the communication system; step 2, carrying out time slot sequencing grouping on the preprocessed signals, wherein the time slot number in each time slot group is random, and one half of the total time length of each time slot group is the time slot gravity center; step 3, defining secondary system code to represent main body representation information, wherein each code element of the binary code corresponds to a time slot group gravity center, and if the binary code element is 1, the corresponding time slot group gravity center is shifted backwards; if the binary code element is 0, the gravity center of the corresponding time slot group is moved forward, so that the technical scheme better solves the problem and can be used for wireless tracking communication.)

1. A wireless tracking communication system, characterized by: the wireless tracking communication system comprises an identification stamp coding modulation unit and an identification stamp demodulation decoding unit which are correspondingly matched with each other; the identification mark coding modulation unit executes the following steps:

step 1, a preprocessing unit of an identification printing code modulation unit preprocesses a communication data stream of a communication system;

step 2, a grouping unit of the identification printing code modulation unit carries out time slot sequencing grouping on the preprocessed signals, the time slot number in each time slot group is random, and one half of the total time length of each time slot group is a time slot gravity center;

step 3, defining secondary system code representation main body representation information by a tracking unit of the mark printing code modulation unit, wherein each code element of the binary code corresponds to a time slot group gravity center, and if the binary code element is 1, the corresponding time slot group gravity center is shifted backwards; if the binary code element is 0, shifting the gravity center of the corresponding time slot group forward;

the identification stamp demodulation decoding unit carries out identification stamp demodulation decoding through the steps corresponding to the identification stamp coding modulation unit to finish the identification of the communication main body information.

2. The wireless tracking communication system of claim 1, wherein: the shift amount of the gravity center of the slot group corresponding to the backward shift is the same as that of the gravity center of the slot group corresponding to the forward shift.

3. The wireless tracking communication system of claim 1, wherein: the preprocessing is PN code spread spectrum modulation.

4. The wireless tracking communication system of claim 3, wherein: when PN code spread spectrum modulation is carried out, the modulation amplitude is more than or equal to 400ms, the PN code length is more than or equal to 14, and the time slot length is more than or equal to 1400 ms.

5. The wireless tracking communication system of claim 4, wherein: the preprocessing is frequency reduction.

6. The wireless tracking communication system according to any of claims 1-5, wherein: the wireless tracking communication system comprises a plurality of identification stamp coding modulation units and identification stamp demodulation decoding units, wherein each group of identification stamp coding modulation units and identification stamp demodulation decoding units adopts time slot sequencing grouping in the step 2 and different backward shift amount and forward shift amount in the step 3;

and weighting and calculating the tracking results of each group of identification mark coding and modulating units and identification mark demodulation and decoding units to obtain the final tracking result.

7. The wireless tracking communication system of claim 6, wherein: the wireless tracking communication system adopts an edge cloud network framework structure and comprises terminal nodes, an edge cloud and a cloud data center;

the terminal node is accessed to each identification stamp coding modulation unit and each identification stamp demodulation decoding unit;

the edge cloud is used for setting a hardware server required by the system;

and a deep learning unit is arranged in the cloud data center and is used for fusing and updating the results of each identification stamp coding and modulating unit and each identification stamp demodulating and decoding unit.

Technical Field

The invention relates to the field of wireless communication tracking, in particular to a wireless tracking communication system.

Background

In many online services such as e-commerce and online medical care, the privacy of user identity is a new focus of network security. The privacy of the user identity is guaranteed, and researchers design various anonymous communication systems. The IP address obtained from the data packet by an attacker does not belong to the real sender or receiver, so that the accurate communication relation cannot be deduced

While protecting the identity privacy of the user, the anonymous communication technology also brings a serious challenge to the investigation and tracking of the communication subject. The invention provides a wireless tracking communication system, which can track a communication subject in an anonymous communication system.

Disclosure of Invention

The invention aims to solve the technical problem of low tracking precision in the prior art. A new wireless tracking communication system is provided, which has the characteristic of high tracking precision.

In order to solve the technical problems, the technical scheme is as follows:

a wireless tracking communication system comprises an identification stamp coding modulation unit and an identification stamp demodulation decoding unit which are correspondingly matched with each other; the identification mark coding modulation unit executes the following steps:

step 1, a preprocessing unit of an identification printing code modulation unit preprocesses a communication data stream of a communication system;

step 2, a grouping unit of the identification printing code modulation unit carries out time slot sequencing grouping on the preprocessed signals, the time slot number in each time slot group is random, and one half of the total time length of each time slot group is a time slot gravity center;

step 3, defining secondary system code representation main body representation information by a tracking unit of the mark printing code modulation unit, wherein each code element of the binary code corresponds to a time slot group gravity center, and if the binary code element is 1, the corresponding time slot group gravity center is shifted backwards; if the binary code element is 0, shifting the gravity center of the corresponding time slot group forward;

the identification stamp demodulation decoding unit carries out identification stamp demodulation decoding through the steps corresponding to the identification stamp coding modulation unit to finish the identification of the communication main body information.

In the above scheme, for optimization, further, the shift amount of the gravity center of the time slot group corresponding to the backward shift is the same as that of the gravity center of the time slot group corresponding to the forward shift.

Further, the preprocessing is PN code spread spectrum modulation.

Furthermore, when PN code spread spectrum modulation is carried out, the modulation amplitude is more than or equal to 400ms, the PN code length is more than or equal to 14, and the time slot length is more than or equal to 1400 ms.

Further, the preprocessing is frequency reduction.

Furthermore, the wireless tracking communication system comprises a plurality of identification stamp coding modulation units and identification stamp demodulation decoding units, wherein each group of identification stamp coding modulation units and identification stamp demodulation decoding units adopts the time slot sequencing grouping in the step 2 and the backward shift amount and the forward shift amount in the step 3 are different;

and weighting and calculating the tracking results of each group of identification mark coding and modulating units and identification mark demodulation and decoding units to obtain the final tracking result.

Further, the wireless tracking communication system adopts an edge cloud network framework structure and comprises terminal nodes, an edge cloud and a cloud data center; the terminal node is accessed to each identification stamp coding modulation unit and each identification stamp demodulation decoding unit; the edge cloud is used for setting a hardware server required by the system; and a deep learning unit is arranged in the cloud data center and is used for fusing and updating the results of each identification stamp coding and modulating unit and each identification stamp demodulating and decoding unit.

The invention has the beneficial effects that: the invention carries out modulation and demodulation on the arrival time information piece of the communication flow and inserts the identification code of the network body identification. The scheme of the invention has strong applicability, is applicable no matter the speed, has low possibility of being cracked and has high tracking precision. On the basis, in order to further improve the precision, spread spectrum modulation or compressed spectrum modulation can be used for increasing the confidentiality. During spread spectrum modulation, PN codes can be subjected to spread spectrum modulation, and at the moment, the modulation amplitude is larger than or equal to 400ms, the PN code length is larger than or equal to 14, and the time slot length is larger than or equal to 1400ms, so that the best effect is achieved. Finally, in order to reduce the system computability, the edge cloud network framework structure is adopted, the calculation amount of the terminal nodes is reduced, and the deep learning unit is arranged in the cloud data center and can estimate the setting of the deep learning optimization parameters according to the previous tracking.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 shows a wireless tracking communication system according to embodiment 1.

Fig. 2 is an edge cloud network framework structure of the wireless tracking communication system according to embodiment 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

The present embodiment provides a wireless tracking communication system, as shown in fig. 1, the wireless tracking communication system includes an identification mark encoding and modulating unit and an identification mark demodulating and decoding unit, which are correspondingly matched with each other; the identification mark coding modulation unit executes the following steps:

step 1, a preprocessing unit of an identification printing code modulation unit preprocesses a communication data stream of a communication system;

step 2, a grouping unit of the identification printing code modulation unit carries out time slot sequencing grouping on the preprocessed signals, the time slot number in each time slot group is random, and one half of the total time length of each time slot group is a time slot gravity center;

step 3, defining secondary system code representation main body representation information by a tracking unit of the mark printing code modulation unit, wherein each code element of the binary code corresponds to a time slot group gravity center, and if the binary code element is 1, the corresponding time slot group gravity center is shifted backwards; if the binary code element is 0, shifting the gravity center of the corresponding time slot group forward;

the identification stamp demodulation decoding unit carries out identification stamp demodulation decoding through the steps corresponding to the identification stamp coding modulation unit to finish the identification of the communication main body information.

Specifically, the shift amount of the gravity center of the corresponding slot group in the backward direction is the same as the shift amount of the gravity center of the corresponding slot group in the forward direction.

Specifically, the preprocessing is PN code spread spectrum modulation. Other spread spectrum modulation techniques may also be employed. This embodiment mainly describes the PN code spread spectrum modulation technique.

Specifically, when PN code spread spectrum modulation is carried out, the modulation amplitude is more than or equal to 400ms, the PN code length is more than or equal to 14, and the time slot length is more than or equal to 1400 ms.

Specifically, the preprocessing is frequency reduction. The frequency reduction can adopt the existing frequency reduction processing, namely, the communication modulation technology of compressing the frequency bandwidth.

Specifically, the wireless tracking communication system comprises a plurality of identification stamp coding modulation units and identification stamp demodulation decoding units, wherein each group of identification stamp coding modulation units and identification stamp demodulation decoding units adopts time slot sequencing grouping in step 2 and different backward shift amount and forward shift amount in step 3;

and weighting and calculating the tracking results of each group of identification mark coding and modulating units and identification mark demodulation and decoding units to obtain the final tracking result.

Preferably, as shown in fig. 2, the wireless tracking communication system adopts an edge cloud network framework structure, and includes a terminal node, an edge cloud, and a cloud data center; the terminal node is accessed to each identification stamp coding modulation unit and each identification stamp demodulation decoding unit; the edge cloud is used for setting a hardware server required by the system; and a deep learning unit is arranged in the cloud data center and is used for fusing and updating the results of each identification stamp coding and modulating unit and each identification stamp demodulating and decoding unit.

Although the illustrative embodiments of the present invention have been described above to enable those skilled in the art to understand the present invention, the present invention is not limited to the scope of the embodiments, and it is apparent to those skilled in the art that all the inventive concepts using the present invention are protected as long as they can be changed within the spirit and scope of the present invention as defined and defined by the appended claims.