Working frequency optimization method in radar tracking state

A working frequency, radar tracking technology, applied in the radar field, can solve the problem of not considering the signal-to-noise ratio optimization technology, not considering the target RCS change, etc., to reduce the radar transmission power and improve the detection performance.

Pending Publication Date: 2018-12-18
XIDIAN UNIV
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Problems solved by technology

[0003] However, the frequency-based SNR optimization technology is not considered at present, and the existing SNR optimization methods do not co

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  • Working frequency optimization method in radar tracking state
  • Working frequency optimization method in radar tracking state
  • Working frequency optimization method in radar tracking state

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[0020] refer to figure 1 , is a general flow chart of a method for optimizing working frequency under radar tracking state of the present invention; wherein the method for optimizing working frequency under radar tracking state includes the following steps:

[0021] Step 1, determine the radar, there is a target in the detection range of the radar, and set the target to be in a moving state; determine the frequency range of the radar transmission signal to be [f min ,f max ], f min Indicates the minimum operating frequency of the radar, f max Indicates the maximum operating frequency of the radar; in this example, f min The value is 800MHz, f max The value is 850MHz; in the frequency range [f min ,f max ] randomly select M frequencies, denoted as f 1 ,f 2 ,…,f i ,…,f M , and then get the frequency vector f,

[0022] f=[f 1 ,f 2 ,…,f i ,…,f M ] T , [ ] T stands for transpose, f i Indicates the i-th frequency, i=1,2,...,M, M indicates that the frequency range o...

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Abstract

The invention discloses a working frequency optimization method in a radar tracking state, and belongs to the technical field of radars. The method is suitable for searching for a strong point of thesignal-to-noise ratio at a frequency response value and can improve the detection performance on a weak target and achieve the purpose of greatly reducing the radar transmission power on the premise that the detection probability required by a system is met by increasing the echo signal-to-noise ratio through frequency optimization. The idea of the method comprises the steps that a radar is determined, a target exists in the detection range of the radar, the frequency interval of a radar transmitting signal is determined, and then a frequency vector is obtained; output data of M frequencies are obtained according to the frequency vector, wherein M>=1; estimated target measurement data is obtained according to the output data of the M frequencies; a polynomial fitting function is obtained according to the estimated target measurement data; and the polynomial fitting function is solved by means of a function optimization method, and then a final radar working frequency is obtained, wherein the final radar working frequency is a working frequency optimization result in the radar tracking state.

Description

technical field [0001] The invention belongs to the technical field of radar, and in particular relates to a working frequency optimization method in a radar tracking state, which is suitable for searching the strong point of the signal-to-noise ratio (SNR) in the frequency response value. Background technique [0002] The target signal-to-noise ratio (SNR) is a measure of the ratio of the signal received by the radar to the power of the noise. It can be known from the radar equation that the target radar cross section (RCS) directly affects the size of the target echo power, thus The target RCS directly affects the signal-to-noise ratio of the target echo signal; in the target tracking stage, the target RCS information can be used to predict and search the strong point of the RCS in the frequency response value, and tracking the target at the strong point of the frequency response can avoid the target from missing. It not only improves the detection probability, but also in...

Claims

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Application Information

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IPC IPC(8): G01S7/28
CPCG01S7/28
Inventor 周生华刘宏伟鲁瑞莲崔恩永严俊坤马晖
Owner XIDIAN UNIV
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