GPS immobilizer system

Abstract

The invention relates to the technical field of a method for correcting radar measurement errors and particularly discloses a GPS immobilizer system. Pure radial motion is performed through a cooperative target, and a deviation angle between the point trace detected by radar and the GPS point trace is observed to correct an angle error. The delay of the GPS point trace sending only generates an error in the radial distance, so that the error between the 0 degrees of the radar and the true north angle can be accurately corrected. Pure tangential motion is performed through the cooperative target so that two arcs with a topocentric center as the center should be formed on the interface of the radar monitoring operation terminal, and the distance difference between the two arcs is the radar distance error that needs to be corrected. The delay of the GPS point trace sending only generates the error in the angle, so that the correction of the radar distance precision is not affected. According to the GPS immobilizer system, the system has the advantages that the ground coordinate system can be normalized with the radar coordinate system by the personnel or other mobile carrier carryingan intelligent terminal pre-installed with a transit APP, so that the high-precision positioning and display of the target point trace on a real map can be realized, and the monitoring information output by the radar terminal is refined.

Description

technical field [0001] The invention relates to the technical field of methods for correcting radar measurement errors, in particular to a GPS anti-theft system. Background technique [0002] The result information of radar detection includes distance, angle, speed, etc. Generally, the focus is on the distance and azimuth of the target, that is, accurate positioning, and the determination of the target position and motion state. Therefore, the acquisition of azimuth and distance information is the main function of surveillance radar. [0003] Based on the principle of radar, there are certain systematic errors in the distance and angle information of the detected points; in addition, the installation error formed by the deviation angle between the mechanical zero position and the true north when the radar station is deployed will have a relatively large impact on the radar measurement accuracy. big impact. In particular, after the radar terminal superimposes the map, it is...

AI Technical Summary

Problems solved by technology

[0010] 2) The operation process is cumbersome

For example, in adverse weather conditions such as high cold and strong wind, the operator may not be able to achieve the purpose of accurate calibration due to his own reasons;

[0012] To sum up, this traditional method has many defects in the field of surveillance radar for rapid mobile deployment, and it is difficult to adapt to the rapidly developing surveillance deployment requirements.

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