A Physical Model for GPS Multipath Caused by Land Reflections: Toward Bare Soil Moisture Retrievals

U. Zavorotny, Valery; M. Larson, Kristine; Braun, John; E. Small, Eric; D. Gutmann, E.; Bilich, Andria

doi:10.1109/jstars.2009.2033608

Public

A Physical Model for GPS Multipath Caused by Land Reflections: Toward Bare Soil Moisture Retrievals

Published in IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing • Oct 22, 2009

Authors:

Valery U. Zavorotny

Kristine M. Larson

John Braun

Abstract

Reflected Global Positioning System (GPS) signals can be used to infer information about soil moisture in the vicinity of the GPS antenna. Interference of direct and reflected signals causes the composite signal, observed using signal-to-noise ratio (SNR) data, to undulate with time while the GPS sa...

Subject

Global Positioning System

Multipath propagation

Water content

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