在机相扫雷达系统中，波束扫描精度不仅决定探测目标的测角、测距精度，甚至影响跟踪、截获目标的成败。文中论述波束扫描的实现途径，提出按脉冲重复频率（PRF）实时计算波束指向参数的方法。该方法提高了波束扫描的精度，改善了目标起伏特性，增强了雷达系统的跟踪精度和威力。对于动平台雷达系统的设计与应用具有重要的参考价值。

In the mechanical phase scan radar, the accuracy of the target's angle and ranging detection is not only determined by the beam-steering accuracy,and even affect success or failure of the tracking ang acquisiting targets. The way to realize the beam-steering is discussed in this paper. It is proposed that a method for calculating the parameters of the beam-steering in real-time by PRF. This method can improve the accuracy of beam-steering, improve the fluctuation of targets,and enhance the tracking accuracy and power of the radar system. This will be referenced by the design and application of the moving platform radar system.

TN820.1