HF radio communication has a significant communication blind zone in the range of 200 kilometers usually. This disadvantage restricts its application in the near range tactical mobile communication.
短波无线电通信在200公里范围内通常存在着盲区，这一特点制约了其在近距机动通信中的应用。
This paper discusses the principle of MPRF wave-form design for airborne PD radar, and the range-velocity blind zone is calculated.
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。
In the engineering applications of short-range HF no-blind zone communication, analyzing the propagation modes and characteristics of electromagnetic wave plays guidance role to engineering practice.
分析近距短波无盲区通信的电波传播方式及性能，对指导工程实践具有重要的意义。
Experiments prove that the blind zone is small, the performance is stable in far and near measure range, and the accuracy accords with engineering requirements in this system.
实验证明系统具有测量盲区小、远近距离测量较稳定、精度符合工程指标的特点。
Experiments prove that the blind zone is small, the performance is stable in far and near measure range, and the accuracy accords with engineering requirements in this system.
实验证明系统具有测量盲区小、远近距离测量较稳定、精度符合工程指标的特点。
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