A spaceborne LFM scatterometer for ocean surface wind vector measurement-a time domain approach

Author

Pillai, N.S. ; Jha, A.M. ; Misra, Tapan

Author_Institution

Space Appl. Centre, Ahmedabad, India

Volume

26

Issue

5

fYear

1988

fDate

9/1/1988 12:00:00 AM

Firstpage

532

Lastpage

540

Abstract

The limitations of the currently used continuous-wave-pulse (CW-pulse) spaceborne scatterometers for wind-vector retrieval are reviewed. The disadvantages due to purely time-domain or frequency-domain (Doppler filtering) approaches are described. To overcome the limitations of these methods, a modified scheme is proposed wherein the pulse transmitted is linearly frequency modulated (LFM) and the processing is carried out in the time domain. This method is described and compared with other techniques to highlight the improved results obtainable with this LFM technique

Keywords

atmospheric techniques; radar applications; remote sensing; wind; CW pulse; LFM technique; atmosphere; continuous-wave-pulse; frequency-domain; linearly frequency modulated; marine boundary layer; method; modified scheme; ocean surface wind vector measurement; remote sensing; spaceborne LFM scatterometer; time domain approach; Chirp modulation; Digital filters; Filtering; Frequency modulation; Oceans; Pulse modulation; Radar measurements; Sea measurements; Sea surface; Spaceborne radar; Time domain analysis; Time measurement;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/36.7678

Filename

7678