Bistatic Microwave Probing of a Refractively Perturbed Clear Atmosphere
Bistatic Microwave Probing of a Refractively Perturbed Clear Atmosphere
复制标题
折射扰动晴朗大气的双站微波探测
DOI：
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发表时间：
1968
期刊：
影响因子：
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通讯作者：
R. Carbone
中科院分区：
文献类型：
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作者：
D. Atlas;K. Naito;R. Carbone
摘要本文通过综合计算，预测了强有力的5-和10-cm波长双基地散射系统在晴朗大气中从垂直薄而水平广的有害扰动活动层接收到的信号电平。结果表明，该模式系统可以检测区域只有适度的对流层的整个深度的活动扰动。虽然水平覆盖范围和最大信号电平随着散射层高度的增加而减小，但在中间路径点附近的信号足够强，以确保对极弱散射层的可靠检测。特别是，对流层顶应定期检测。危险的晴空湍流也应该很容易被检测到，至少在中间路径附近。对于大的水平覆盖范围，垂直极化上级于水平极化。较短的波长也略优于较长的，其他的上级。
Abstract Comprehensive calculations are carried out to predict the signal levels to be received by powerful 5- and 10-cm wavelength bistatic scatter systems from vertically thin but horizontally extensive layers of turbulently perturbed refractivity in the clear atmosphere. The results indicate that the model systems can detect regions having only modest refractivity perturbations throughout the entire depth of the troposphere. Although the horizontal coverage and the maximum signal levels decrease with increasing altitude of the scatter layer, the signals are sufficiently strong in the vicinity of the mid-path point to assure the reliable detection of extremely weak scattering layers. In particular, the tropopause should be detected routinely. Hazardous clear air turbulence should also be readily detected, at least in the vicinity of the mid-path. Vertical polarization is superior to horizontal polarization for large horizontal coverage. The shorter wavelength is also slightly superior to the longer, oth...