Towards multi-frequency soil moisture retrieval using P- and L-band passive microwave sensing technology

Nan Ye, Xiaoling Wu, Jeffrey Walker, Nithyapriya Boopathi, Thomas J. Jackson, Yann Kerr, Edward Kim, Andrew McGrath, In Young Yeo, Mahta Moghaddam

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

3 Citations (Scopus)

Abstract

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 Kband passive microwave from initial trial flights.

Original languageEnglish
Title of host publication2018 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018 - Proceedings
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages3707-3710
Number of pages4
ISBN (Electronic)9781538671504
DOIs
Publication statusPublished - 31 Oct 2018
EventIEEE International Geoscience and Remote Sensing Symposium 2018 - Valencia, Spain
Duration: 22 Jul 201827 Jul 2018
Conference number: 38th

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)
Volume2018-July

Conference

ConferenceIEEE International Geoscience and Remote Sensing Symposium 2018
Abbreviated titleIGARSS 2018
CountrySpain
CityValencia
Period22/07/1827/07/18

Keywords

  • Airborne field experiments
  • Brightness temperature
  • K-band
  • L-band
  • Multifrequency
  • P-band
  • Soil moisture

Cite this

Ye, N., Wu, X., Walker, J., Boopathi, N., Jackson, T. J., Kerr, Y., Kim, E., McGrath, A., Yeo, I. Y., & Moghaddam, M. (2018). Towards multi-frequency soil moisture retrieval using P- and L-band passive microwave sensing technology. In 2018 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018 - Proceedings (pp. 3707-3710). [8519266] (International Geoscience and Remote Sensing Symposium (IGARSS); Vol. 2018-July). IEEE, Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/IGARSS.2018.8519266