粒径谱仪 mini-las ; Scanning Mobility Particle Sizer
气溶胶粒径谱仪 Aerosol Spectrometer ; aerosol sizing ; Welas - OPC
粒径谱 particle-size spectra ; particle size distribution
单径谱 monodispersed size distribution
机载径谱计 airborne spectrometer
雨滴径谱 raindrop size distribution
雨滴径谱仪 raindrop spectrograph
宽范围颗粒粒径谱仪 Wide-range Particle Spectrometer
气胶径谱 aerosol size distribution
无线环境中存在多径衰落、 多谱勒频移和信道快速时变等许多不利因素。
There are lots of disadvantages in wireless environment, such as multi-paths fading, Doppler frequency shift and fast time varying of channel.
空地通信信道的主要统计特性包括多径衰落特性、多普勒功率谱和时延功率谱。
The statistic model of air-ground radio communication channel is characterized by the multipath fading, Doppler power spectrum and delay power spectrum.
它具有通信容量大、辐射功率谱密度低，抗多径干扰，结构简单和保密性好等优点。
It is featured with high system capacity, low power spectral densities, exceptional multi-path immunity, simple structure and low probability of detection.
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