Multi-detector coordinate system transformation and error correction methods

Abstract

The invention relates to the field of multi-detector coordinate system transformation, in particular to multi-detector coordinate system transformation and error correction methods. Aiming at problems existing in the prior art, the invention provides the multi-detector coordinate system transformation and error correction methods. Aiming at the fact that an FOD detection system mainly depends on a radar detection technology, an image detection technology and a laser detection technology, the invention provides a mutual transformation mathematical model of detector coordinates and a runway global coordinate system and provides a method for calculating the parameters of the transformation model. On such basis, aiming at errors of transformation results, the invention provides the error correction method, so that the coordinate transformation accuracy is improved further. According to the invention, corresponding position information under the detector coordinate system of test points is measured through detectors; the parameters in the coordinate transformation model are solved according to the corresponding relationship; after target coordinates are obtained in the detection, a simplified formula for mutual transformation of detection coordinates of multiple detectors and the standard runway coordinates is calculated out.

Description

technical field [0001] The invention relates to the field of multi-detector coordinate system conversion, in particular to a method for multi-detector coordinate system conversion and error correction. Background technique [0002] The core equipment of the fixed FOD detection system is several detection units installed on both sides of the runway. The detection unit can be one or more of radar, imaging and laser. After the detection unit finds the FOD target, it can only provide the target coordinates in its own coordinate system in the absence of global information. However, this coordinate is difficult to be understood intuitively, and it is also difficult to be used by other devices. It needs to be converted to a runway coordinate system that can be understood intuitively. An accurate coordinate system conversion method is a key step in the overall method of FOD detection, a standard and bridge for the mutual conversion of coordinates of multiple detection units, and t...

AI Technical Summary

Problems solved by technology

Simple conversion models are easy to calculate parameters, but the conversion results have large errors; conversely, complex conversion models have small conversion results errors, but it is difficult to calculate parameters

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