Preliminary Study of Performance Evaluation of Adaptive Scan with Wide-Band Noise Modulation for Spaceborne Rain Radar Based on Simulation

Toyoshi SHIMOMAI  Kentaro ADACHI  Toshiaki KOZU  

IEICE TRANSACTIONS on Communications   Vol.E94-B   No.3   pp.786-792
Publication Date: 2011/03/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.786
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Sensing
spaceborne rain radar,  TRMM,  adaptive antenna scan,  wide-band noise modulation,  rainfall observation,  

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Wide-band noise modulation is added to the adaptive scan technique for spaceborne rain radar. The performance of this technique is studied by simulation using one month of TRMM (Tropical Rainfall Measuring Mission) Precipitation Radar (PR) data from the viewpoints of improving the sensitivity and reducing power consumption. The results show that the adaptive scan technique with wide-band noise modulation uses about 25% less energy than the conventional scanning technique. The adaptive scan using wide-band noise modulation is more effective than that using a normal pulse for localized rainy areas. Surface data as well as rainfall data can be obtained by using the adaptive scan using wide-band noise modulation.