A system and method for locating an electromagnetic emission source
A technology of positioning system and transmitting source, applied in the field of communication, can solve the problems of large positioning error and small angle range of signal receiving spectrum, and achieve the effect of improving the accuracy of angle measurement
Active Publication Date: 2021-11-30
BEIJING MECHANICAL EQUIP INST
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[0005] In view of the above analysis, the present invention aims to provide an electromagnetic emission source positioning system to solve the problems of the existing positioning system signal receiving spectrum angle range is small and the positioning error is large
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[0053] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and together with the embodiments of the present invention are used to explain the principle of the present invention and are not intended to limit the scope of the present invention.
[0054] A specific embodiment of the present invention discloses an electromagnetic emission source positioning system. Such as figure 1 shown, including:
[0055] The signal receiving module is used to receive radio signals emitted by electromagnetic emission sources at different positions;
[0056] The signal processing module is used to process the radio signal to obtain the amplitude and phase shift of the radio signal, and extract the main features of the radio signal.
[0057] an angle of arrival prediction module, configured to obtain a first predicted angle of arrival value according...
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The invention relates to an electromagnetic emission source positioning system and method, which belongs to the technical field of communication and solves the problems of small receiving angle range and low positioning accuracy of existing positioning systems. The system includes: a signal receiving module for receiving radio signals; a signal processing module for processing the radio signals to obtain the amplitude and phase shift of the signals and to extract the main features of the signals. The arrival angle prediction module obtains the first arrival angle prediction value according to the amplitude and phase shift of the signal; and obtains the second arrival angle prediction value according to the main characteristics of the signal; the positioning point prediction module obtains the first arrival angle prediction value based on the first arrival angle prediction value and The first incident trajectory and the second incident trajectory of the signal determined by the second predicted angle of arrival value; and the intersection of a plurality of first incident trajectories and the intersection of a plurality of second incident trajectories to obtain a set of predicted positioning points; the positioning point determination module, according to The location of the electromagnetic emission source is determined by clustering the set of predicted anchor points. The system has the advantages of large signal receiving angle range and high positioning accuracy.
Description
technical field [0001] The invention relates to the field of communication technology, in particular to an electromagnetic emission source positioning system and method. Background technique [0002] The demand for radio direction finding equipment in the military has led to the rapid development of wireless positioning technology. The traditional positioning technology research is to use two or more fixed direction-finding stations to network for rendezvous positioning. This positioning and direction finding technology can solve many practical problems in the process of use, but due to the influence of various factors, there are certain errors in this measurement method, which cannot achieve what people imagine. The approximate position of the target can be measured, but this position is an area, and the exact position cannot be determined. Therefore, it is of great value to conduct further research on radio technology and improve the accuracy of radio direction finding i...
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IPC IPC(8): G01S5/04G01S5/02
CPCG01S5/0278G01S5/04
Inventor 杜潇吴思李昆鹏王家璇
Owner BEIJING MECHANICAL EQUIP INST