This paper discusses the principle of MPRF wave-form design for airborne PD radar, and the range-velocity blind zone is calculated. Finally the effect of detecting accuracy on range ambiguity resolution is analyzed. 探讨了机载PD雷达MPRF波形设计的原则,并计算了距离-速度盲区,最后,分析了检测精度对解距离模糊的影响。