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The Miniaturization Revolution in Earth Observing

Graeme Stephens, Antony Freeman, Erik Richard, Peter Pilewskie, Philip Larkin, Clara Chew, Simone Tanelli, Shannon Brown, Derek Posselt, Eva Peral
2020 Bulletin of The American Meteorological Society - (BAMS)  
Infeasible Feasible SNoOPI-A 6U CubeSat mission, currently under development, using reflectometry to exploit UHF (P band) signals from communication satellites for root-zone soil moisture.  ...  As a signal of opportunity measurement, the GPS signals are not necessarily optimized for ocean wind sensitivity, especially lighter winds.  ... 
doi:10.1175/bams-d-19-0146.a fatcat:v2ybxkr2dbb6bpu552umhucd4a

The Emerging Technological Revolution in Earth Observations

Graeme Stephens, Antony Freeman, Erik Richard, Peter Pilewskie, Philip Larkin, Clara Chew, Simone Tanelli, Shannon Brown, Derek Posselt, Eva Peral
2019 Bulletin of The American Meteorological Society - (BAMS)  
A technology revolution in Earth observation sensor design is occurring.  ...  This paper provides four examples of observations made with prototype miniaturized observing systems, including from CubeSats, that offer a glimpse of this emerging sensor revolution and a hint at future  ...  John Yorks of GSFC provided the parameters of the TOMCAT lidar system.  ... 
doi:10.1175/bams-d-19-0146.1 fatcat:qigwv54nxjhl7kt5nh6xo53efm

The legacy of the SIR-C/X-SAR radar system: 25 years on

Anthony Freeman, Manfred Zink, Ed Caro, Alberto Moreira, Louise Veilleux, Marian Werner
2019 Remote Sensing of Environment  
Twenty-five years ago, the two flights of the SIR-  ...  NASA recently selected the SigNals-Of-Opportunity P-band Investigation (SNoOPI) -a cubesat project pathfinder for measuring two of these environmental parameters using reflected P-band Signals-of-Opportunity  ...  Signals-of-Opportunity Another under-exploited innovation resulting from SIR-C/X-SAR (Table 3) is the use of reflected Signals-of-Opportunity such as GPS to measure variations in geophysical properties  ... 
doi:10.1016/j.rse.2019.111255 fatcat:2qkh6bdnxbaapjumm334akvxve

SCoBi Multilayer: A Signals of Opportunity Reflectometry Model for Multilayer Dielectric Reflections

Dylan Boyd, Mehmet Kurum, Orhan Eroglu, Ali Cafer Gurbuz, James L. Garrison, Benjamin R. Nold, Manuel A. Vega, Jeffrey R. Piepmeier, Rajat Bindlish
2020 Remote Sensing  
A multilayer module is incorporated into the Signals of Opportunity (SoOp) Coherent Bistatic Scattering model (SCoBi) for determining the reflections and propagation of electric fields within a series  ...  For a frequency range of 100–2400 MHz, it is seen that the SoOp-R response to a single dielectric slab is mostly frequency insensitive; however, the SoOp-R response to multilayer dielectric slabs will  ...  Conflicts of Interest: The authors declare no conflict of interest. Remote Sens. 2020, 12, 3480  ... 
doi:10.3390/rs12213480 fatcat:ujesitjquregjgndqzjj5hhszu

Modeling the effects of topography on delay-Doppler maps

James D. Campbell, Amer Melebari, Mahta Moghaddam
2020 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing  
A method for simulating delay-Doppler maps (DDMs) of global navigation satellite system signals reflected from land surfaces with heterogeneous terrain is developed from first principles.  ...  The method accounts for the displacement of reflected power into bins of lower delay due to raised surface terrain.  ...  Gleason for their guidance on how to register the delay and Doppler of each CYGNSS DDM bin. Finally, he is grateful to R. H. Chen for his assistance with soil parameters from  ... 
doi:10.1109/jstars.2020.2981570 fatcat:wt3x5kdh7fbsfnoksjay2rywta

Table of Contents

2020 IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium  
TU2-R13: ADVANCES IN REFLECTOMETRY WITH GNSS AND SIGNALS OF OPPORTUNITY(GNSS+R) TU2-R13.1: FFSCAT MISSION: PRELIMINARY RESULTS AND ICE PRODUCTS VALIDATION ........................... 3341 WITH MOSAIC CAMPAIGN  ...  Agency (ESA-ESTEC), Netherlands TU2-R13.3: ANALYSES SUPPORTING SNOOPI: A P-BAND REFLECTOMETRY ....................................................... 3349 DEMONSTRATION James Garrison, Purdue University  ... 
doi:10.1109/igarss39084.2020.9323828 fatcat:6aittajt35gufeaugcmemu5cya

DESIGN OF AN INSTRUMENT FOR SOIL MOISTURE AND ABOVE GROUND BIOMASS REMOTE SENSING USING SIGNALS OF OPPORTUNITY

Benjamin R Nold
2019
Signals of Opportunity (SoOp) based remote sensing has recently emerged as a complementary method for soil moisture remote sensing.  ...  This thesis developed a tower based SoOp instrument implementing frequencies in the P-Band and S-Band.  ...  Signals of Opportunity Recently, bi-static reflectometry using Signals of Opportunity (SoOp) has emerged as a new technology for remote sensing.  ... 
doi:10.25394/pgs.9108248.v1 fatcat:m26ypn6lfjdh5hqggiltjg6c2m

P-band Microwave Radiometry and Soil Moisture Retrieval

XIAOJI SHEN
2022
, therefore paving the way for a successful P-band mission to obtain deeper and more accurate global soil moisture information.  ...  Looking towards the future, P-band (0.3-1 GHz) is a promising technique to enhance the current L-band (1.4 GHz) missions, due to the postulated greater moisture retrieval depth and reduced roughness and  ...  Acknowledgments It has been a long and at times daunting journey for the past three years and five months. This thesis would not have been possible without the inspiration and support  ... 
doi:10.26180/19670928 fatcat:mz5hsbt2praoxe245otivbdveu