Theoretical analysis of direct-finding targets with rolling-airframe passive radar by phase interference technique

From the point of positioning principle regard to the passive with rolling-airframe, this article derives a new testing formula for the angle between aim line of target and axis of missile, introduces a measurement method of time-difference by using true time delay with optical fiber. Authors analyze the reason of angle ambiguity phase interferometer with single baseline, and also compare the advantage of measuring time-difference method with phase-difference. We simulate the process of the phase interferometer of the rolling-airframe missile. This approach provides a new access to develop and manufacture phase interferometer with rolling-airframe