双站被动多普勒测速

Velocity Determination by Passive Bistatic Doppler Radar

基于双基站侦查系统对于有源空中运动目标,提出了一种被动测速方法。该方法利用双站与目标间的几何位置关系和相对速度引起的多普勒频差信息构建动态方程,求解目标速度。通过几组真实的参数详细分析了测速精度与测频精度、测角精度的关系。仿真结果证明该方法在较大的方位角范围内有较高的测速精度,且对于测频精度和测角精度的敏感性不高。

A new method for velocity determination at the radiated moving target is presented based on bistatic Doppler radar system. By analyzing Doppler difference frequency information caused by the ubiety and the relative velocity, equations for velocity determination are established. Then the precision relationship among velocity determination, frequency determination and angle determination is anlayzed by several groups of practical parameters. Simulation results show that the precision of the velocity determination is improved in a large area of the azimuth, and the method is insensitive to the precisions of frequency and angle determinations.