A point pair construction method of measured value and ais true value for marine radar calibration

A construction method and measurement value technology, applied to radio wave measurement systems, instruments, etc., can solve problems such as the construction method of unseen measurement values ​​and AIS true value point pairs, and achieve the effect of reducing errors, reducing errors, and reducing quantities

Active Publication Date: 2017-11-14
NAVAL AERONAUTICAL & ASTRONAUTICAL UNIV PLA
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Problems solved by technology

At present, there is no research report on the construction method of the measured value and AIS true value point pair for marine radar calibration

Method used

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  • A point pair construction method of measured value and ais true value for marine radar calibration
  • A point pair construction method of measured value and ais true value for marine radar calibration
  • A point pair construction method of measured value and ais true value for marine radar calibration

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Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings. With reference to the accompanying drawings in the description, the specific implementation of the present invention is divided into the following steps:

[0017] (1) Use unified timing equipment to perform timing for marine radar and AIS equipment to ensure that the time of the equipment is consistent;

[0018] (2) Data 1 is the target track data output by the marine radar, and data 2 is the AIS message output by the AIS receiving equipment, and the preliminary screening of the AIS message is completed, and only the message with the message identification code 1 is received, and only the forwarding instruction is received For the message whose symbol is 0, only the message with the ship position accuracy of 1 is received, and only the message of the target whose electronic positioning device type is 1 is received, and only the message of the target whose elect...

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Abstract

The invention discloses a marine radar calibration-oriented measured value and AIS truth value dot pair construction method. The technology relates to the field of marine radar error calibration, and available targets are screened for pairing, thereby building a target dot pair, and providing data support for subsequent error analysis. The method is realized mainly through the following technical scheme: first uniform GPS time service equipment is utilized to provide time service to marine radar equipment and AIS receiving equipment; then validity judgment is performed on an AIS message, preliminary screening is completed, space coordinate transformation is performed on AIS positioning data according to a radar antenna position, a screening area is set and radar targets are screened; then the screened radar targets are fed back to the AIS and further screening is performed, and the screening area is diminished according to a screening result till target pairing is completed; and finally, according to time of radar track data and a paired AIS target track of adjacent moments before and after the time of the radar track data, interpolation is performed on the AIS track, and an interpolation result and the radar track form a measured value and truth value dot pair.

Description

1. Technical field [0001] The present invention relates to the research direction of point pair construction between measured value and AIS true value in the field of marine radar error calibration. It uses the real-time data received by AIS equipment on the shore as the target true value to carry out data preprocessing for marine radar error calibration. In this stage, it will provide data support for subsequent error analysis of marine radars, and is suitable for error calibration of sea surface target detection radars such as navigation, search, warning, and target indication under shore-based and ship-borne platform conditions. 2. Background technology [0002] AIS, namely Automatic Identification System, is a communication response device used to assist the ship traffic management system. The facility can automatically broadcast and receive ship dynamic, static and navigation-related data by means of self-organizing time-division multiple access. AIS has been widely us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/40
CPCG01S7/40
Inventor 王国庆孙璐刘宁波姜佰辰周伟孙艳丽关键
Owner NAVAL AERONAUTICAL & ASTRONAUTICAL UNIV PLA
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