Microwave Rain Gauge

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NAS5-03020
Agency Tracking Number: 023589
Amount: $69,658.00
Phase: Phase I
Program: SBIR
Awards Year: 2003
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
11350 Random Hills Rd. Suite 710, Fairfax, VA, 22030
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Suman Ganguly
 Principal Investigator
 (703) 385-7717
Business Contact
 Suman Ganguly
Title: President
Phone: (703) 385-7717
Email: sganguly@cfrsi.com
Research Institution
This proposal describes a plan for the Design and Development of line of sight area averaged rain measurements using microwave backscatter techniques. The line averaged (and area covered) could be made variable, from as low as 100m to several km. The individual units can thus be used for both local measurements as well as for extending the observation over rain-cells. The techniques might be extended using multi-frequency and other techniques to obtain independent estimates of drop size distribution. Both microwave attenuation and phase-shift are potential candidates for measuring rain rates. Microwave attenuation increases with frequency up to 100 GHz. The choice of appropriate frequencies is important, and optimization may become necessary in terms of available technology, cost and accuracies. The proposed effort describes a plan to develop a versatile instrument for measuring backscattered attenuation and phase at several frequencies. Experiments performed using the instrument will allow us to infer the optimum system parameters during Phase II. Such a system will be valuable for earth communities, scientific research, global environment, agriculture and forestry among others. It would be valuable for NASA in estimating the ground truth and calibration and for comparison with the TRMM Rain Radar.

* Information listed above is at the time of submission. *

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