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Method and device for processing radar echo sampling data

A radar echo and sampling data technology, applied in the field of video processing, can solve the problems of image flicker, unable to observe the image, unfavorable situation judgment, etc., to achieve the effect of high efficiency and fast speed

Inactive Publication Date: 2017-06-13
MONITORING & CONTROL SYST ENG RES INST CHINESE PEOPLES LIBERATION ARMY AIR FORCE INST OF WARNING
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] 1) Simply correspond the radar echo data to the pixels on the computer screen display, and the displayed radar echo image will have many regular stripes, which will affect the display effect and is not conducive to situation judgment;
[0005] 2) The refresh rate of the radar real-time imaging screen is fast, and the refresh rate of the direct drawing of the PC cannot meet the requirements, which will cause serious image flickering, and the human eye cannot observe a stable image at all;
[0006] 3) The display of radar echo images superimposed on satellite maps helps to intuitively observe the geographical relationship between targets and important landmarks such as coasts and islands, and form a clear near-shore situation. However, at present, radar echo images and satellite maps cannot be accurately matched. Accuracy, especially when the radar switches the range and eccentricity, it is necessary to update the superimposed satellite map synchronously

Method used

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  • Method and device for processing radar echo sampling data
  • Method and device for processing radar echo sampling data
  • Method and device for processing radar echo sampling data

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Embodiment 1

[0041] see figure 2 , the present invention proposes a processing method for radar echo sampling data, specifically comprising:

[0042] Step 101: When a frame of radar echo sampling data is received, determine whether the number of radial sampling points of the radar echo sampling data is less than a first preset value, and / or determine the circumference of the radar echo sampling data Whether the number of sampling points is less than the second preset value;

[0043] Wherein, the first preset value is K / 2, the second preset value is π*K, and the resolution of the square area tangent to the circle drawn by the radar echo is K*K;

[0044]Step: 102: If it is less than, then perform bilinear interpolation in the radial and / or circumferential direction to supplement the missing sampling points;

[0045] This method is a two-way segment compensation method proposed for insufficient sampling density.

[0046] Step 103: Obtain the polar coordinates of the echo sampling data, an...

Embodiment 2

[0117] see Figure 7 , an embodiment of the present invention provides a radar echo sampling data processing device, the device includes an interpolation threshold compensation module 201 and an image flicker suppression module 202,

[0118] The interpolation threshold compensation module 201 includes a judgment unit 2011 and a compensation unit 2012,

[0119] The judging unit 2011 is used to judge whether the number of radial sampling points of the radar echo sampling data is less than K / 2 when receiving a frame of radar echo sampling data, and / or, judge the circumference of the radar echo sampling data Whether the number of sampling points is less than π*K, where the resolution of the square area tangent to the circle drawn by the radar echo is K*K;

[0120] The compensation unit 2012 is used to perform bilinear interpolation in the radial direction and / or circumferential direction to supplement the missing sampling points when the determination result of the determination ...

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Abstract

The invention discloses a method and device for processing radar echo sampling data. The method includes the following steps that when a frame of radar echo sampling data is received, according to the number of radial sampling points of the radar echo sampling data and the number of peripheral sampling points of the radar echo sampling data, bilinear interpolation is conducted in the radial direction and / or the circumference direction to supplement missing sampling points, and according to rounding errors, an interpolation threshold compensation method is provided. The device includes an interpolation threshold compensation module, an inhibition image flashing module and an echogram display module. By means of the method and the device, an effective solution is provided for image display leaking point compensation, image flickering and satellite map overlay positioning and other problems in digital echo display in the prior art, the speed is high and the implementation efficiency is high.

Description

technical field [0001] The invention relates to the technical field of video processing, in particular to a method and device for processing radar echo sampling data. Background technique [0002] At present, coastal surveillance radars deployed along the coast can monitor the dynamics of nearshore targets, including sea vessels and low-altitude flying objects, so as to quickly discover and deal with coastal defense alarms. The echo images monitored by the radar are generally displayed on the front-end radar terminal. [0003] For unattended scenarios, monitoring centers at all levels far away from radar equipment need to receive the echo data of coast surveillance radar through the network, restore and display the radar echo image in real time on the PC platform, and realize the detection and tracking of moving targets. In order to meet the above new requirements, the radar echo display is performed on the PC platform, but the existing radar echo data has the following def...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41G01S7/40
CPCG01S7/40G01S7/415
Inventor 秦清桑成伟黄俊刘洋高婷王志斌
Owner MONITORING & CONTROL SYST ENG RES INST CHINESE PEOPLES LIBERATION ARMY AIR FORCE INST OF WARNING
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