Passive Location Method Based on Phase Rate of Change

Technology of passive location has broad prospects in applications. In this paper, the single observer passive location method using phase rate of change is introduced based on existing methods. This new method can obtain the direction of the target with phase information of two orthogonal inter-ferometers on the observer and the radial distance with the corresponding phase rate of change. Then the target can be located with high speed and precision. Some locating expressions are given when the flying posture of the observer is changed. Simulations show that this method is effective.