Radiation source identification method based on radar signal fingerprint characteristics

A feature recognition and radiation source technology, applied to radio wave measurement systems, instruments, etc., to achieve the effect of improving accuracy and reliability

Pending Publication Date: 2019-01-15
NO 8511 RES INST OF CASIC
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Problems solved by technology

[0004] The purpose of the present invention is to provide a radiation source identification method based on the radar signal fingerp

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  • Radiation source identification method based on radar signal fingerprint characteristics
  • Radiation source identification method based on radar signal fingerprint characteristics
  • Radiation source identification method based on radar signal fingerprint characteristics

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0018] The invention adopts the rising edge of the pulse envelope in the pulse envelope parameters as the "fingerprint" of the radar signal. Since the rising time of the pulse envelope is very short, it is less interfered by the multipath effect. For any two waveforms, the more similar their shapes are, the higher the degree of correlation will be. In the present invention, it is determined by calculating the collected envelope rising edge data and the Hausdorff distance between the pre-stored "fingerprint" templates The degree of correlation, the smaller the Hausdorff distance, the more similar the two waveforms are, so from the point of view of probability and statistics, it can be considered that they match.

[0019] combine figure 1 and figure 2 , a radiation source identification method based on radar signal fingerprint features, the method steps are ...

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Abstract

The invention discloses an individual characteristic identification method based on pulse envelope rising edge characteristic search matching. According to the rising edge envelope characteristics ofa radar signal, the purpose of performing individual characteristic identification on a radiation source through a Hausdorff distance-based rising edge envelope matching method guided by intentional identification is achieved; spurious modulation due to random change of magnetron parameters of a radar transmitter can cause that envelopes of transmitted signals have difference; therefore, radar fingerprint characteristics are formed; but, multi-path and noise influence on the pulse envelope rising edge is relatively low; when being practically used, the method has relatively high reliability; therefore, the rising edge envelope information of the radar signal is used as the fingerprint of the radar signal; and, in combination with intentional identification guide, the matching success ratein practical application can be increased.

Description

technical field [0001] The invention belongs to the field of intrapulse unintentional modulation identification, in particular to a radiation source identification method based on radar signal fingerprint features. Background technique [0002] With the development of radar technology, it has become a hot issue in the field of electronic reconnaissance to use the "fingerprint" characteristics of radar signals to identify specific radiation sources. In the case of the same traditional signal parameters, through the identification of specific radiation sources, the unintentional modulation information of radiation sources can be used to complete the distinction and identification of radar radiation sources, and then carry out effective and long-term monitoring and tracking of specific radiation sources. [0003] Due to the subtle differences in the magnetrons of each radar emitter, there is a wealth of unintentional modulation information on its pulse envelope, so that even ra...

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Application Information

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IPC IPC(8): G01S7/28
CPCG01S7/2813
Inventor 刘志武冀贞海王昀李文魁杨树树胡新宇徐学华侯文栋马琴宋海伟李贵显
Owner NO 8511 RES INST OF CASIC
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