关键词: 无源定位, 干涉仪, 相位差变化率, 圆锥向角, GDOP

Abstract: Due to the calculation requirements of the azimuth angle and the elevation angle, previous passive localization systems need twodimensional interferometer installation. In order to alleviate the load on the platform, the conical bearing for onedimensional interferometer system only is obtained, and a localization method applied to the ground stationary emitter is presented using the conical bearing and the rate of phase difference change. The localization geometric distribution of precision (GDOP) is computed and simulated by Monte-Carlo experiment, and the principle of interferometer heading and attitude vibration is clearly demonstrated. The investigation results show that the system is simple and has approximately the same localization ability as previous passive localization systems. The conclusions will be useful for the design and operation of such systems.

Key words: passive localization, interferometers, rate of phase difference change, conical bearing, GDOP