Sea cluster parameter obtaining method for ship radar

A parameter acquisition and marine radar technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of high resource consumption, large delay, and difficulty in describing the distribution of clutter out of the sea, achieving good processing results, reducing hardware or The effect of consumption of software resources

Inactive Publication Date: 2013-09-04
NINGBO CHENGDIAN TAIKE ELECTRONICS INFORMATION TECH DEV
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Problems solved by technology

There are two disadvantages of using this method: on the one hand, since the formula contains operations such as logarithm, square root, multiplication, and division, it takes more resources to use hardware or software to perform these operations in practical applications, and the calculation on the other hand, it is difficult to describe the distribution of sea clutter in actual situations by using a limited sea clutter model

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  • Sea cluster parameter obtaining method for ship radar

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing, provide the specific embodiment of the present invention.

[0023] The sea clutter parameter acquisition process of the embodiment of the present invention is as follows figure 1 As shown, the specific process is as follows:

[0024] S1. Initialization parameters, the parameters of the example are: the number of sampling points n of a single radar echo signal under the current radar range 0 is 4608, the number of scanning lines M of the radar scanning cycle is 2048, the number of points N displayed on the display screen of the next radar scanning line in the current range is 768, the current range s is 1.5 nautical miles and about 2778m, and the AD sampling clock f is 125MHz. The propagation speed c of electromagnetic wave in vacuum is 3×10 8 m / s, the fast accumulation parameter L is 8, by the formula The calculated value of the parameter k is 6;

[0025] S2. Allocate storage space to the sequence, and initialize the ...

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Abstract

The invention discloses a sea cluster parameter obtaining method for a ship radar, which obtains a sea cluster parameter by performing processing of sampling quantization, drawing or insertion, fast accumulative total, average value removing, accumulation and averaging on an echo signal for the ship radar. The sea cluster parameter obtaining method is applied to suppression of the sea cluster in processing of the ship radar signal, can simply and fast obtain the sea cluster parameter, and avoids the shortcomings that a traditional obtaining method for the sea cluster parameter has complicated computing and can not reflect sea cluster distribution in a practical sea area in real time in the practical application.

Description

technical field [0001] The invention relates to a method for processing marine radar signals, in particular to a method for acquiring sea clutter parameters of marine radar. Background technique [0002] Marine radar is widely used in fishing boats, cruise ships, warships and other ships, and plays an important role in ship navigation, obstacle detection, and target tracking. Marine radar signal processing technology is a key factor affecting the display effect of marine radar images, and sea clutter suppression is an important link in marine radar signal processing. It plays an important role in effectively filtering out sea clutter and clearly restoring marine radar images. important influence. [0003] At present, most of the sea clutter parameters of marine radar are obtained by establishing sea clutter models based on the marine environment where the ship is currently sailing, and calculating them through complex sea clutter parameter calculation formulas. There are t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/41
Inventor 田丹李建李浩陈曦陶吉怀李宏波冉元进陈闹
Owner NINGBO CHENGDIAN TAIKE ELECTRONICS INFORMATION TECH DEV
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