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首页> 外文期刊>IEEE Geoscience and Remote Sensing Letters >Experimental Demonstration of Soil Moisture Remote Sensing Using P-Band Satellite Signals of Opportunity
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Experimental Demonstration of Soil Moisture Remote Sensing Using P-Band Satellite Signals of Opportunity

机译：使用机会P波段卫星信号的土壤水分遥感试验

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P-band Signals of Opportunity (SoOp) has great potential for remote sensing of root zone soil moisture (RZSM) from space. We have carried out a tower-based experiment with receivers to detect the reflected signals from the communications satellites at the Fraser Experimental Forests (FEFs), Colorado, in 2017. The measured reflectivity data at 260 MHz have a good correlation with in-soil moisture (SM) measurements. Retrieval of SM from the reflectivity data was also performed with results indicating accuracy of about 0.01 bias and 0.02 standard deviation (std) with respect to the average of SM in the upper 10 cm of soil. The experimental data and retrieval analyses lend support to the use of P-band SoOp for the remote sensing of SM. Our data also indicate the limitation of single frequency observations, suggesting the requirement of multiple frequencies to enable RZSM remote sensing because the surface SM plays a critical role on the change of reflectivity even at P-band frequencies.
机译：机会的P频段信号（SOOP）具有极大的潜力，可以从空间遥感根带土壤水分（RZSM）。我们已经开展了一个基于塔的实验，接收器，以检测来自2017年Fraser实验森林（FEFS）的传播卫星的反射信号。260MHz的测量反射率数据与土壤水分有良好的相关性（SM）测量。还使用反射率数据检索SM，结果表明相对于土壤上10厘米的SM的平均值约为0.01个偏差和0.02标准偏差（STD）的结果。实验数据和检索分析对使用P波段SOOP进行偏远感测SM的使用支持。我们的数据还指示单频率观测的限制，建议要求多个频率来实现RZSM遥感，因为表面SM即使在P波段频率下也在反射率的变化上起着关键作用。

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