A time-difference positioning method for complex electronic signals based on time-domain clustering
An electronic signal and time difference positioning technology, applied in positioning, radio wave measurement systems, instruments, etc., can solve problems such as difficulty in sorting radiation source signals in complex systems, achieve high promotion and application value, and improve the effect of passive positioning capabilities
Active Publication Date: 2019-04-30
THE 724TH RES INST OF CHINA SHIPBUILDING IND
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Problems solved by technology
However, the overlap of parameters in the current environment and the variation of complex system electronic system signals make these methods have certain difficulties in solving the problem of complex system radiation source signal sorting
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[0023] The present invention is described below in conjunction with embodiment and accompanying drawing.
[0024] The flow diagram of the complex signal time difference positioning method based on time domain clustering proposed by the present invention is as follows figure 1 shown.
[0025] When the complex signal is a broadband signal, since the bandwidth of most passive reconnaissance systems is composed of multiple channels spliced, in practical applications, a single target is often sorted into multiple targets with inconsistent frequencies. To solve this problem, when the pulse data is divided according to the frequency range in step s4, the pulse data is divided according to the template of the broadband special signal, so that the time domain characteristics of the whole broadband signal can be analyzed simultaneously.
[0026] In addition to frequency changes, existing complex electronic signals also have changes in repetition period and pulse width. Generally, ther...
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The invention provides a complex electronic signal time-difference positioning method based on time-domain clustering, which belongs to the field of passive reconnaissance and positioning, and is mainly used for realizing time-difference positioning of complex electronic signals. The method is characterized by, for radiation source signals intercepted through reconnaissance in a complex environment, extracting complex target radiation signal characteristics from five aspects: radio frequency, pulse width, repetition period, amplitude and time of arrival; for the feature of characteristic change time consistency of a same target signal detected by different reconnaissance systems at the same time, through a complex electronic signal time-difference positioning algorithm based on time-domain clustering, carrying out simple clustering on the radio frequency and the pulse width first, and then, carrying out time-difference calculation on data in a corresponding parameter range, and carrying out histogram statistics on time-difference results; and finally, carrying out fusion processing on consistent time difference in an error range, thereby realizing positioning and tracking of the complex electronic signals.
Description
technical field [0001] The invention belongs to passive positioning in the field of electronic countermeasures. Background technique [0002] The time difference positioning method in the current passive positioning technology has the advantages of high positioning accuracy and simple positioning algorithm, and has been widely promoted in recent years. In practical application, this algorithm has a good effect in the location of multiple identification friend or foe signals, but there are many difficulties in the location of electronic signals, especially multi-target complex signals. The positioning probability is low and the accuracy rate is poor. It is an important difficulty to judge whether the pulse signals of multiple receiving stations are the same target in a complex electromagnetic environment. [0003] Modern electronic systems are developing in the direction of multi-function and multi-purpose. An electronic information system may have multiple working modes an...
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IPC IPC(8): G01S5/02
CPCG01S5/0273
Inventor 臧勤严波
Owner THE 724TH RES INST OF CHINA SHIPBUILDING IND