An optimization method for target location of missile-borne bistatic forward-looking SAR ship

Abstract

The invention discloses a missile-borne double-base forward vision SAR ship target positioning optimization method. The method comprises the following steps of determining a missile-borne double-base forward vision SAR platform, wherein the missile-borne double-base forward vision SAR platform detects whether there is a target in a range and takes a scene where the target is located as a target scene, the missile-borne double-base forward vision SAR platform includes a transmitter and receiver, the transmitter emits a signal to the target scene, and the receiver receives an echo signal reflected by the target scene, and then carries out distance direction and azimuth sampling so as to acquire sampled signals; successively carrying out matching filtering and imaging processing on the sampled signals and acquiring a double-base forward vision SAR image; determining a center point of the target scene, and calculating a distance between the receiver and the center point of the target scene; carrying out geometric image correction on the double-base forward vision SAR image and projecting to a ground distance plane and acquiring a ground distance SAR image; and according to the distance between the receiver and the center point of the target scene, acquiring missile-borne double-base forward vision SAR ship target positioning information.

Description

technical field [0001] The invention belongs to the technical field of radar image target positioning, and particularly relates to an optimization method for target positioning of a missile-borne dual-base forward-looking SAR ship, which is suitable for obtaining position information of a missile-borne dual-base forward-looking SAR ship target relative to a receiver, and Based on the influence of errors on MBLF-SAR imaging, the constraint requirements for meeting accuracy can be given. Background technique [0002] Missile-borne bistatic forword-looking synthetic radar (MBFL-SAR) imaging technology makes up for the vacancy of two-dimensional high-resolution imaging of single-base forward-looking SAR, and realizes the multi-warhead ballistic missile through this imaging technology. However, when aiming at ship targets and aircraft carrier formations on the sea, it is impossible to obtain feature points by matching with the reference map, and then locate the target and missile...

AI Technical Summary

Problems solved by technology

Unit This document does not analyze the motion error that the missile-borne radar is concerned about, and does not give constraints to meet the accuracy requirements

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