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A Self-correction Method for Radar Echo Azimuth Offset

A radar echo and self-correction technology, applied in the reflection/re-radiation of radio waves, radio wave measurement systems, instruments, etc., can solve the problems affecting the normal duty of VTS users, the difficulty of maintenance personnel arriving in time, and the interference of VTS traffic supervision, etc. question

Active Publication Date: 2021-03-30
中船鹏力(南京)大气海洋信息系统有限公司 +1
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Problems solved by technology

However, the radar video azimuth will deviate from time to time. If this situation occurs during abnormal working hours, it will be difficult for maintenance personnel to arrive in time, seriously affecting the normal duty of VTS users and causing great damage to VTS traffic supervision. interference

Method used

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  • A Self-correction Method for Radar Echo Azimuth Offset
  • A Self-correction Method for Radar Echo Azimuth Offset
  • A Self-correction Method for Radar Echo Azimuth Offset

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Embodiment Construction

[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0048] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "left side", "right side", "upper", "lower" are based on the orientations or positional relationships shown in the accompanying drawings, and are only For the purpose of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, "first", "second" and the like do not represent components importance, and therefore should not be construed as limiting the invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present in...

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Abstract

The invention discloses a self-correction method for radar echo azimuth shift. The self-correction method comprises the following steps: 1, building an automatic correction feature library for a radarecho azimuth; 2, performing statistics to obtain real-time feature information; 3, performing azimuth correction judgment; 4, automatically correcting the azimuth; 41, recording last feature information; 42, searching for an azimuth shift amount; 43, performing azimuth correction final judgment; and 44, automatically correcting the azimuth: calibrating and updating the radar echo azimuth automatic correction feature library built in the step 1 according to the azimuth angle obtained in the step 43 to obtain an updated radar echo azimuth automatic correction feature library. Through adoption of the self-correction method, whether radar video echo undergoes azimuth shift or not can be judged accurately, and azimuth correction can be performed automatically after azimuth shift occurs on system radar video echo. After a radar runs into an azimuth code abnormal failure, unattended operation and automatic recovery can be realized.

Description

technical field [0001] The invention relates to the technical field of radar signal processing, in particular to a self-correction method for radar echo azimuth offset. Background technique [0002] At present, when most ships carry out illegal and criminal activities, they often choose to do them at night, and they will turn off AIS equipment to reduce the probability of being discovered by the regulatory authorities. However, these behaviors cannot escape the "eyes" of radar. Vessel Traffic Service System (VTS for short) is an important means of supervising ships on water, and plays an important role in realizing all-weather and all-weather supervision of VTS system. However, the cost of radar equipment is expensive, and its service life is often longer than that of the supporting VTS system. In the reconstruction and expansion of VTS projects, the existing radar equipment is often reused. With the passage of time, the probability of radar equipment failure is gradually i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/41G01S7/40G01S13/90
CPCG01S7/4021G01S7/418G01S13/9094
Inventor 金家龙周引平袁圣夏金锋王子骏
Owner 中船鹏力(南京)大气海洋信息系统有限公司
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