转台对天线阵列角模拟精度的影响

Effects of the Rotating Platform on Antenna-Array Angle Simulation Precision

转台和天线阵列是射频仿真试验系统的两个主要组成部分,射频仿真试验系统的精度是以天线阵列角精度来表征的。由于转台误差以及转台中心与天线阵列球心不重合等原因,会影响天线阵列角模拟精度。针对转台的运动性能,结合天线阵列三元组工作原理,研究计算了转台静态误差和动态误差的数学模型,最后给出了转台对天线阵列角模拟精度影响的仿真结果。

The rotating platform and the antennaarray are two main parts of RadioFrequency （RF） Simulation Test System.The error of RF Simulation Test System is represented by the angle simulation precision of the antennaarraywhich may be influenced by the error of the rotating platform and the incoincidence between the rotating platform center and the spherical center of the antennaarray.The mathematic models of static and dynamic error of the rotating platform are analyzed and calculated out based on the operational principle of the antennaarray and motion performance of the rotating platform.Finallythe simulation results about rotating platforms effects on the angle simulation precision of the antennaarray angle are presented.