Distributed high-frequency ground wave radar combined positioning method based on interior point method

Abstract

The invention provides a distributed high-frequency ground wave radar combined positioning method based on an interior point method. The method comprises the steps of: 1, building a time difference positioning model for a distance estimation value of a target through employing each radar array, and carrying out initial positioning on a to-be-measured target through a Chan algorithm; 2, constructing an optimization function according to the distance estimation value of the to-be-measured target by each radar array, and constructing a corresponding orientation constraint condition according to an orientation estimation value measured by each radar array; and step 3, solving the inequality constraint optimization function in the step 2 by using the interior point method in a convex optimization theory to realize optimal positioning of the to-be-measured target. According to the method provided by the invention, the nonlinear problem of measurement noise of the positioning model is fully considered, useful information measured by each radar array is utilized to the greatest extent, orientation information is taken as a constraint condition, the optimization range of the to-be-measured target is determined, and the optimization result of target positioning is effectively improved.

Description

Technical field [0001] The present invention relates to the field of radar signaling, target positioning technology, and more particularly to a distributed high-frequency ground-waveleral joint positioning method based on an interpretation method. Background technique [0002] High-frequency waveleids have become a surveillance exclusive economic zone with its advantages such as large, wide-range, super-visual distance, and all-weather work, and provide remote security for vessels to achieve a favorable weapon for the target's super-visual warning detection. However, its operating frequency band and signal system determine that the positioning error caused by the angular deviation in the case of super-visual detection is often reached in several tens of kilometers. In order to further improve the positioning accuracy of the target, the distributed system is used to combine the target information obtained by the distributed multi-base station high-frequency ground wave radar, and ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of poor positioning accuracy of single-base high-frequency ground-wave radar, the time delay and azimuth information obtained by distributed high-frequency ground-wave radar multi-station measurement are used to jointly locate the target

Aiming at the problem that traditional distributed joint positioning cannot achieve high-precision positioning outside the encircled area, the present invention provides an interior point method based on the characteristics of distributed high-frequency ground wave radar multi-array joint reception and synchronous acquisition of multiple information. Distributed High Frequency Surface Wave Radar Target Joint Positioning Method

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