Through establishing DEM and three dimensional landform models of study areas, we discovered, two pilot areas have obvious difference in geographic and geomorphologic characteristic.
通过建立DEM和研究区域三维地貌模型发现，两试验区地形地貌特征差异较大。
In this paper, we analyze the BER performance of pilot symbol assisted two-dimensional spread spectrum systems with coherent demodulation in multi-path fading channels.
在多径衰落信道中，本文分析了导引辅助的二维扩频相干解调的误码率性能。
In this paper, we analyze the BER performance of pilot symbol assisted two-dimensional spread spectrum systems with coherent demodulation in multi-path fading channels.
在多径衰落信道中，本文分析了导引辅助的二维扩频相干解调的误码率性能。
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