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The development of a power spectral density processor for C and L band airborne radar scatterometer sensor systemsA real-time signal processor was developed for the NASA/JSC L-and C-band airborne radar scatterometer sensor systems. The purpose of the effort was to reduce ground data processing costs. Conversion of two quadrature channels of data (like and cross polarized) was made to obtain Power Spectral Density (PSD) values. A chirp-z transform (CZT) approach was used to filter the Doppler return signal and improved high frequency and angular resolution was realized. The processors have been tested with record signals and excellent results were obtained. CZT filtering can be readily applied to scatterometers operating at other wavelengths by altering the sample frequency. The design of the hardware and software and the results of the performance tests are described in detail.
Document ID
19830022722
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Harrison, D. A., III (Lockheed Engineering and Management Services Co., Inc. Houston, TX, United States)
Chladek, J. T. (Lockheed Engineering and Management Services Co., Inc. Houston, TX, United States)
Date Acquired
September 4, 2013
Publication Date
February 1, 1983
Subject Category
Instrumentation And Photography
Report/Patent Number
LEMSCO-19158
NAS 1.26:171668
NASA-CR-171668
Accession Number
83N30993
Funding Number(s)
CONTRACT_GRANT: NAS9-15800
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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