Missile body analyzing and positioning method based on double/multi-base radar

Abstract

The invention discloses a missile body analysis and positioning method based on a double / multi-base radar. The implementation scheme comprises the following specific steps: 1) establishing a three-dimensional imaging coordinate system; 2) acquiring an image of a missile-borne double / multi-base radar ground distance plane; 3) obtaining matching points in the missile-borne double / multi-base radar ground distance plane image; 4) calculating the total number of distance units of each matching point; 5) calculating the bistatic distance sum of the missile-borne bistatic / multistatic radar; 6) establishing a missile-borne double / multi-base radar nonlinear positioning equation set; 7) solving the position coordinates of the receiving radar in the missile-borne dual / multi-base radar; and 8) determine the position coordinates of the receiving radar in the missile-borne dual / multi-base radar. The missile-borne double / multi-base radar positioning method is used for positioning the receiving radarin the missile-borne double / multi-base radar in the missile terminal guidance stage, and has the advantages of being high in positioning precision, wide in application range and good in robustness.

Description

technical field [0001] The invention belongs to the field of radar technology, and further relates to a dual / multi-base radar projectile analysis and positioning method in the field of radar signal processing technology. The invention can be used to realize the precise positioning of the receiving radar seeker when striking the dual / multi-base radar target. Background technique [0002] The missile-borne dual / multi-base radar can realize two-dimensional high-resolution imaging of the target area directly in front of the receiving radar, breaking the defect that the missile-borne single-base radar cannot look forward to imaging, and expanding the application of the radar imaging system in the terminal guidance stage. Dual / multi-base radar guidance technology has been widely used in the field of positioning. [0003] Xu Yushi proposed a bistatic radar target positioning method based on the range-Doppler equation in his paper "Bistatic (Multistatic) Synthetic Aperture Radar Po...

AI Technical Summary

Problems solved by technology

It is used to solve the problem in the prior art that due to ignoring the Doppler space-varying characteristics of bistatic SAR, it is only applicable to the shift-invariant mode of bistatic SAR and cannot be applied to any configuration of bistatic SAR

At the same time, it can also be used to solve the problem that the adjacent pixel iterative method used in the prior art to obtain other target position information has very strict requirements for the selection of initial parameters, the initial parameter selection is not accurate, and the adjacent pixel iterative method will fail.

Moreover, it can also solve the problem that in the prior art, in the terminal guidance stage of the missile, the error of the inertial navigation data of the beam pointing angle of the transceiver platform will increase with the increase of time, causing the subsequent positioning error to be too large and unable to meet the precise guidance requirements of the missile terminal guidance stage. The problem

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