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Stepwise regression estimation method for radar detection efficiency

A step-by-step regression and radar echo technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of unpredictable operating distance and the accuracy of meteorological parameter measurement of complex meteorological equipment, so as to increase the system burden, improve combat effectiveness, easy to get effect

Inactive Publication Date: 2012-07-11
THE 724TH RES INST OF CHINA SHIPBUILDING IND
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Problems solved by technology

[0005] In order to solve the problem that the operating distance of the sea detection radar system is difficult to predict under the condition of the atmospheric waveguide, the present invention adopts the use of radar echo signal data, through the internal correlation analysis and multivariate stepwise regression calculation method of the echo intensity and distance extension. Effectively predict radar detection performance, while avoiding complex meteorological equipment, sensor installation, and problems with the accuracy of meteorological parameters and water temperature measurement during ship navigation

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Embodiment Construction

[0009] The specific implementation steps of the radar detection effectiveness stepwise regression estimation method of the present invention are:

[0010] 1) Data extraction

[0011] ●Radar echo intensity

[0012] First, when the farthest target ship appears or disappears, extract the average value of the main trigger within the radar antenna beam width in the azimuth, and then use 40 distance points as a distance grid to perform segmentation processing to obtain the area where the maximum radar echo intensity is located At the same time, according to the actual sea conditions, it is selected to compare with the radar echo intensity under standard atmospheric conditions at this distance, and the normalized radar echo attenuation at different distances is obtained. If there are If the target is moving or fixed, reduce the size of the azimuth or delete the distance grid;

[0013] ●Radar echo extension distance

[0014] First, the internal noise of the receiver is counted to o...

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Abstract

The invention relates to a stepwise regression estimation method for radar detection efficiency and aims to solve the problem of difficulty in prediction of the remote beyond-visual-range detection efficiency of a marine microwave radar under the condition of atmospheric duct. The method comprises the following steps of: on the basis of a microwave signal beyond-visual-range transmission principle under the condition of the atmospheric duct, according to radar echo signal data, analyzing an internal relation between echo strength and distance extension, performing multiple stepwise regression computation, and establishing a marine radar detection efficiency prediction model based on radar echo to implement prediction of the detection efficiency of the marine radar. Implementation software can be embedded into radar equipment, hardware is eliminated, cost increase is not required, and the beyond-visual-range detection efficiency of the microwave radar can be predicted in real time.

Description

technical field [0001] The invention belongs to the technical field of prediction of abnormal atmospheric transmission efficiency of microwave signals. Using the radar echo signal data, through the internal correlation analysis of the echo intensity and distance extension and the multivariate stepwise regression calculation method, the marine radar detection effectiveness prediction model based on radar echo can be realized. This model can make more effective use of microwave radio equipment. Efficiency in use at sea. Background technique [0002] The phenomenon of atmospheric waveguide propagation can not only make the electromagnetic wave deviate from the original propagation direction, but also make the electromagnetic wave travel along the waveguide to a long distance with a small attenuation, and the operating distance of the marine radio equipment can reach thousands of kilometers. However, when radio equipment works at sea, the external environment it encounters is e...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41
Inventor 王向敏申宏亚王玲玲
Owner THE 724TH RES INST OF CHINA SHIPBUILDING IND
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