Microwave brightness temperature measurements over a varying density wheat crop

Manfred Owe; Adriaan A. Van de Griend; Jan de Ruiter

doi:10.1117/12.227175

24 November 1995 Microwave brightness temperature measurements over a varying density wheat crop

Manfred Owe, Adriaan A. Van de Griend, Jan de Ruiter

Proceedings Volume 2585, Remote Sensing for Agriculture, Forestry, and Natural Resources; (1995) https://doi.org/10.1117/12.227175
Event: Satellite Remote Sensing II, 1995, Paris, France

Abstract

Microwave brightness temperatures were measured over a young wheat crop of varying canopy density during the First NOPEX Concentrated Field Effort near Uppsala, Sweden. Measurements were made with a portable ground-based microwave radiometer system at frequencies of 1.4 GHz and 5 GHz. The brightness temperature at each wavelength was measured at horizontal, vertical, and 45 degree polarization, and also at incidence angles ranging from nadir to 60 degrees. Four full measuring sequences were made; at full canopy, after each of two thinnings, and of the bare soil. A second series of measurements was also made over a similar plot which had been flooded with water to a depth of approximately 2 - 4 cm. Supporting data such as soil and canopy temperature, soil moisture, other soil physical properties, and canopy biomass were also collected. Preliminary results of some of the field measurements and comparisons with theoretical models are presented and discussed.

Citation Download Citation

Manfred Owe, Adriaan A. Van de Griend, and Jan de Ruiter "Microwave brightness temperature measurements over a varying density wheat crop", Proc. SPIE 2585, Remote Sensing for Agriculture, Forestry, and Natural Resources, (24 November 1995); https://doi.org/10.1117/12.227175

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