该文用射线跟踪法解释了大气波导中无线电盲区的形成原因，导出了计算无线电盲区起始位置的近似公式。
The paper explains the formation of radio holes in atmospheric duct based on ray tracing method, provides approximate expressions to determine the initial position of radio holes.
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。
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.
在没有任何显著复杂的布置的情况下，可以把无线电资源恰当地分布到盲区和非盲区。
Radio resources can be appropriately distributed to blind and non-blind zones without any significantly complicated arrangements.
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