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Method for evaluating performance of ship radar in interference environment

A radar and ship technology, which is applied in the field of ship radar performance evaluation under interference environment, can solve the problems of lack of accurate formula for calculating the number of samples, and no complete model for ship radar.

Pending Publication Date: 2020-01-24
CHINA SHIP DEV & DESIGN CENT
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AI Technical Summary

Problems solved by technology

[0004] Previous evaluation methods did not establish a complete model for the characteristics of ship radar, and lacked an accurate formula for calculating the number of samples

Method used

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  • Method for evaluating performance of ship radar in interference environment
  • Method for evaluating performance of ship radar in interference environment
  • Method for evaluating performance of ship radar in interference environment

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Embodiment Construction

[0048] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0049] Such as figure 1 As shown, the ship radar performance evaluation method in the interference environment of the embodiment of the present invention includes the following methods:

[0050] a. Radar and interference source antenna emission modeling: establish a emission signal model based on the power of the emission signal, pulse repetition period, etc.; use electromagnetic calculation tools (such as CST, etc.) to calculate the antenna radiation pattern according to the antenna structure, so as to establish the ship Space emission model of the antenna;

[0051] b. Electromagnetic signal tra...

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Abstract

The invention discloses a method for evaluating the performance of a ship radar in an interference environment, comprising: a first step of radar and interference source antenna emission modeling; a second step of electromagnetic signal transmission modeling; a third step of target and background echo scattering modeling; a fourth step of electromagnetic signal transmission modeling and antenna receiving signal modeling; a fifth step of radar receiver modeling; a sixth step of obtaining a video signal output by the model; and a seventh step of processing data and evaluating the performance ofa radar, wherein an evaluation algorithm is established, video output data of the radar is processed, and the performance of the radar is evaluated. The method of the invention has the beneficial effects that: the method provides a complete ship radar performance evaluation model, which can analyze and evaluate the performance of the ship radar in the interference environment; because the modelingis performed at a signal level and in zero intermediate frequency, a simulation model does not depend on frequency and device parameters of a radar receiving channel, so that the model has universality and high efficiency; a ship platform and other platforms have common characteristics and can evaluate the performances of land, airborne and spaceborne radars.

Description

technical field [0001] The invention relates to the technical field of radar performance analysis, in particular to a method for evaluating ship radar performance in an interference environment. Background technique [0002] The technical performance indicators (detection threshold, detection probability, etc.) of ship radar generally refer to the parameters in a more ideal environment, and usually take the thermal noise and background clutter inside the radar as the basic influencing factors. The radar performance index in this ideal external environment can be obtained directly by using simple formulas with the help of analytical methods. [0003] The environment in which the actual radar is located usually includes various intentional electromagnetic disturbances. This kind of interference is random, and the amplitude, phase, and pulse width are all random values. At this time, the radar technical performance index will drop greatly, and the magnitude of the drop cannot...

Claims

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Application Information

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IPC IPC(8): G01S7/40
CPCG01S7/4052
Inventor 王春肖龙倪超吴为军黄明亮
Owner CHINA SHIP DEV & DESIGN CENT
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