Experimental Results of Snow Measurement Using P-Band Signals of Opportunity
- Resource Type
- Conference
- Authors
- Shah, Rashmi; Yueh, Simon; Xu, Xiaolan; Elder, Kelly; Huang, Huanting; Tsang, Leung
- Source
- IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium Geoscience and Remote Sensing Symposium, IGARSS 2018 - 2018 IEEE International. :6280-6283 Jul, 2018
- Subject
- Aerospace
Computing and Processing
Fields, Waves and Electromagnetics
Geoscience
Photonics and Electrooptics
Signal Processing and Analysis
Snow
Correlation
Phase measurement
Remote sensing
Vegetation mapping
Soil measurements
Forestry
Snow Water Equivalent
Signals of Opportunity
Bistatic Radar
Phase Measurement
- Language
- ISSN
- 2153-7003
This paper shows results from a proof-of-concept tower experiment that computed phase from a reflected P-band signal. The change in phase of the reflected signal is related to SWE for dry snow and snow depth for wet snow and the rate of change of phase is directly correlated to frequency of observation. The effect of vegetation was also evaluated by using measurements from two towers: one with no vegetation and one surrounded by small trees with heights of up to 3 meters. The phase measurement from the two sites had excellent correlation of 0.99 during the accumulation phase. The correlation between SWE and phase measurement was found to be between 0.95 and 0.98 during the accumulation phase. During the melt phase, negative correlation between 0.68 and 0.80 was found between snow depth and phase measurement.