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A speed error correction method and system based on ring scan radar image matching

A speed error and radar image technology, which is applied in the field of speed error correction based on ring scan radar image matching, and can solve the problem that the matching error cannot be corrected.

Active Publication Date: 2022-05-20
BEIJING INST OF REMOTE SENSING EQUIP
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  • Abstract
  • Description
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Problems solved by technology

[0003] In view of the above technical problems, the purpose of the present invention is to provide a speed error correction method based on radar image matching to solve the problem that the matching error caused by the inertial navigation speed error cannot be corrected during the radar image matching process

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  • A speed error correction method and system based on ring scan radar image matching
  • A speed error correction method and system based on ring scan radar image matching
  • A speed error correction method and system based on ring scan radar image matching

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[0037] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] The present invention provides a speed error correction method based on ring scan radar image matching, such as figure 1 shown, including steps:

[0039] S1. Build a speed error correction system based on the image matching of the ring scan radar.

[0040] The speed error correction system includes radar real-time map simulation module, image matching module, speed error estimation factor calculation module and speed error correction module.

[0041] S2. Using radar satellite images, elevation data, a...

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Abstract

The invention discloses a speed error correction method based on the image matching of the ring scan radar, which comprises the steps of: building a speed error correction system based on the image matching of the ring scan radar; Figure: Intercept the sub-area according to the track information, match the sub-area and judge the validity of the matching result; calculate the speed error estimation factor, and judge whether the speed error correction can be performed; when the speed error correction condition is met, the matching result is corrected . The invention realizes the estimation of the inertial navigation speed error and the correction of its influence.

Description

technical field [0001] The invention relates to the field of speed error correction, in particular to the speed error correction based on ring-scan radar image matching. Background technique [0002] Radar scene matching technology is widely used in the fields of aircraft navigation and missile guidance due to its small influence from weather and high precision. In the imaging process, the inertial navigation velocity error will cause the displacement of the scene in the real-time image. Therefore, in the case of image registration, since the inertial navigation velocity error is unknown, the matching error caused by it cannot be corrected. Contents of the invention [0003] In view of the above technical problems, the purpose of the present invention is to provide a speed error correction method based on radar image matching to solve the problem that the matching error caused by the inertial navigation speed error cannot be corrected during the radar image matching proces...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/90G01S13/58
CPCG01S13/58G01S13/9029G01S13/9088
Inventor 陈铮铮林超张金昌
Owner BEIJING INST OF REMOTE SENSING EQUIP