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Target detection waveform optimization and processing method for agile coherent radar

A target detection and waveform optimization technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as insufficient target detection performance, and achieve excellent target detection capabilities, low pulse compression sidelobe, and optimal design effects

Pending Publication Date: 2021-11-30
XIDIAN UNIV
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Problems solved by technology

[0005] Aiming at the problem of insufficient target detection performance of the existing frequency-agile radar in the environment of strong clutter and strong interference, the purpose of the present invention is to propose a target detection waveform optimization and processing method of the agile coherent radar. Radar Target Detection Waveform Optimization and Processing Method Through the waveform optimization method, the waveform of agile coherent radar is optimized and designed, and at the same time, the corresponding agile coherent radar signal processing method is provided to realize target detection of agile coherent radar in strong clutter and strong interference environment performance improvement

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  • Target detection waveform optimization and processing method for agile coherent radar
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  • Target detection waveform optimization and processing method for agile coherent radar

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Embodiment Construction

[0024] Embodiments of the present invention will be described in detail below in conjunction with examples, but those skilled in the art will understand that the following examples are only used to illustrate the present invention, and should not be considered as limiting the scope of the present invention.

[0025] The technical solution adopted in the present invention is: a target detection waveform optimization and processing method of agile coherent radar, comprising the following steps:

[0026] refer to figure 1 , is a schematic flow chart of a target detection waveform optimization and processing method of an agile coherent radar of the present invention;

[0027] Step 1. Optimizing the intra-pulse baseband signal waveform of agile coherent radar by using nonlinear frequency modulation signal waveform;

[0028] The sub-steps of step 1 are:

[0029] Sub-step 1.1, determine the segmental expression of the intra-pulse baseband signal waveform s(t) of the agile coherent ...

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Abstract

The invention belongs to the technical field of radar signal processing, and discloses a target detection waveform optimization and processing method for an agile coherent radar, which comprises the following steps of 1, optimizing a baseband signal waveform in a pulse of the agile coherent radar by using a nonlinear frequency modulation signal waveform, 2, establishing an echo model based on the agile coherent radar after waveform optimization, and obtaining an echo matrix, 3, performing pulse compression processing on the agile coherent radar after waveform optimization to obtain a pulse compression matrix, and 4, conducting coherent processing on the agile coherent radar after waveform optimization, and realizing improvement of target detection performance of the agile coherent radar. According to the method, the target detection performance of the agile coherent radar is improved in a strong clutter and strong interference environment, active deception jamming and aiming suppressing jamming of the radar can be effectively resisted, the detection distance farther than that of a non-coherent frequency agile radar can be achieved, and higher real-time performance is achieved by adopting a coherent accumulation algorithm.

Description

technical field [0001] The invention belongs to the technical field of radar signal processing, and in particular relates to a target detection waveform optimization and processing method of agile coherent radar, which is applied to the design of radar real-time signal processing system, electronic reconnaissance, electronic countermeasures, and detection, identification and tracking of radar targets and other fields. Background technique [0002] Frequency-agile radar, also known as pulse-to-pulse frequency-agile radar or frequency-agile radar, is a radar system in which the operating carrier frequency of the radar randomly jumps between adjacent pulses. It has strong anti-interference, high distance resolution and electromagnetic Strong compatibility and other advantages. [0003] In a typical frequency-agile radar application scenario, on the one hand, the radar beam will inevitably irradiate the ground and the sea, resulting in a large number of strong clutter signals d...

Claims

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Application Information

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IPC IPC(8): G01S7/41G01S7/36
CPCG01S7/41G01S7/36
Inventor 吴耀君全英汇刘智星方文杜思予邢孟道
Owner XIDIAN UNIV
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