- Title
- Towards multi-frequency soil moisture retrieval using P- and L-band passive microwave sensing technology
- Creator
- Ye, Nan; Wu, Xiaoling; Walker, Jeffrey; Boopathi, Nithyapriya; Jackson, Thomas J.; Kerr, Yann; Kim, Edward; McGrath, Andrew; Yeo, In-Young; Moghaddam, Mahta
- Relation
- 2018 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2018). 2018 IEEE International Geoscience and Remote Sensing Symposium Proceedings (Valencia, Spain 22-27 July, 2018) p. 3707-3710
- Publisher Link
- http://dx.doi.org/10.1109/IGARSS.2018.8519266
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- conference paper
- Date
- 2018
- Description
- A fundamental limitation of current soil moisture remote sensing technology is that can only provide moisture information on the top 5 cm layer of soil at most, being one-tenth to one-quarter of the wavelength (21 cm at L-band; 1.4 GHz) using the current SMAP and SMOS soil moisture dedicated missions of NASA and ESA. Consequently, we have developed an airborne passive microwave sensing capability at P-band to develop a new state-of-the-art satellite concept that will provide soil moisture data for the top 10 cm layer of soil using radiometer observations at P-band (40 cm; 750 MHz). Not only would P-band provide soil moisture information on a soil layer thickness that more closely relates to that affecting crop and pasture growth, but it is expected to produce greater spatial coverage with improved accuracy to that from L-band. This is because P-band should be less affected by surface roughness conditions and have a reduced attenuation by the overlaying vegetation. This paper describes a series of small airborne field experiments at P-band, and presents some early results of P-band passive microwave observations in comparison with L-band and K-band passive microwave from initial trial flights.
- Subject
- soil moisture; microwave radiometry; L-band; land surface; brightness temperature; remote sensing
- Identifier
- http://hdl.handle.net/1959.13/1403385
- Identifier
- uon:35165
- Identifier
- ISBN:9781538671504
- Language
- eng
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