Rain and snow clutter suppression method based on moving summation deviation and STC
An interference suppression, rain and snow technology, applied in the field of marine navigation radar, can solve the problems of not considering the difference between target and clutter distribution, not fully considering the characteristics of rain and snow interference, and general suppression effect, so as to suppress rain and snow interference and save Effects on processing time, improved applicability and effectiveness
Inactive Publication Date: 2014-11-05
CHENGDUSCEON TECH
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[0003] The purpose of the present invention is to provide a rain and snow interference suppression method based on moving summation deviation and STC control, to solve the problem that the current rain and snow interference suppression method does not fully consider the characteristics of rain and snow interference, the amount of calculation is too large, or the target is not considered The difference from the distribution of clutter, the general problem of suppression effect
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[0048] Such as figure 1 As shown, a kind of rain and snow interference suppression method based on mobile summation deviation and STC control described in this embodiment is characterized in that: comprising the following steps:
[0049] Step 1: Determine the working parameters of rain and snow interference suppression. The working parameters include the range of navigation radar target detection, the working mode, intensity and gain of rain and snow interference suppression. The rain and snow interference suppression working modes are divided into two levels: manual and automatic; The intensity is divided into three levels: strong, medium, and weak; the gain indicates the depth of clutter suppression; the gain cannot be adjusted in automatic mode, and it is a fixed value, such as 50, and the gain can be adjusted in manual mode; when the gain is 0, no rain and snow interference suppression;
[0050] Step 2: According to the range of navigation radar target detection determine...
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The invention discloses a rain and snow clutter suppression method based on a moving summation deviation and STC. The method includes the following steps that 1, rain and snow clutter suppression working parameters are determined; 2, the range resolution of echo data is obtained according to the range detected by an navigation radar target determined in the step 1; 3, the data length of the moving summation deviation is obtained according to rain and snow clutter suppression gains determined in the step 1; 4, a normalized moving summation deviation coefficient of each echo datum is calculated; 5, each echo datum is weighted through the corresponding normalized moving summation deviation coefficient obtained through calculation to obtain a new echo datum range; 6, STC weighting values corresponding to the echo data are calculated out; 7, rain and snow clutter suppression is finished through judgment and comparison. By means of the rain and snow clutter suppression method, the rain and snow clutter suppression effect can be improved, processing time is shortened, and the applicability and effectiveness of the suppression method are improved.
Description
technical field [0001] The invention relates to the field of marine navigation radar, in particular to a rain and snow interference suppression method based on moving summation deviation and STC control. Background technique [0002] Marine navigation radar is one of the necessary navigation equipment for sailing ships. Radar clutter interference has always been the focus of radar designers. For ship navigation radar, radar clutter mainly includes rain and snow interference, sea wave interference, radar co-frequency interference and radar internal noise interference, etc., which will have an adverse effect on the detection and identification of targets. Rain and snow interference suppression is an essential function of marine navigation radar. Rain and snow interference suppression is mainly to decompose and weaken the rain and snow interference of the received radar echo data, and realize the suppression of the dense rain and snow interference on the sea surface where the ...
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IPC IPC(8): G01S7/36
CPCG01S7/2927G01S7/2928G01S13/937
Inventor 张鑫何奎唐浩彭祥龙张翼周
Owner CHENGDUSCEON TECH