射频仿真系统是一个复杂的大系统，文中详细分析了系统内的各项误差。利用求解波印亭矢量的方法，推导了由于阵面辐射单元信号泄漏所带来的试验误差公式，进而从理论上分析了辐射单元间距对试验精度的影响。最后指出可以通过提高静区静度指标要求到达提高试验精度的目的，并研究了静区指标与被试品主瓣宽度、角模拟精度之间的关系。

RFSS is a very big and complex system, kinds of errors of this system are introduced. This paper also analyses the affect of signal leaking using the concept of Poynting, and puts forward a formula to describe the connection of antenna interval and test precision from theoretics. At last this paper points out that precision of test can be improved by enhancing reflection level of quiet - zone, and researches the relation of reflection level, precision of test and main lobe of testing radar.

TN955