Research on Phase Difference Rate of Change for Passive Location with Variant Posture of the Observer

Abstract:- Technology of passive location has broad prospects in applications. In this paper, phase difference rate of change for single observer-passive location is introduced based on existing methods. We can obtain the direction of the target with phase difference information of two orthogonal interferometers on the observer and the radial distance with corresponding phase difference rate of change. Then the target can be located with high speed and precision. When flying posture of the observer is changedthe target can be located directly in the original coordinate system according to measurement data. Related locating expressions are given. Simulations show that this method is effective. Key-Words:- phase difference, rate of change, single observer, passive location, variant posture, direction