Near Real Time Visualization of RF Terrain Model

Award Information
Agency: Department of Defense
Branch: Army
Contract: A982-1690
Agency Tracking Number: A982-1690
Amount: $69,393.00
Phase: Phase I
Program: SBIR
Awards Year: 1999
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
7923 Jones Branch Dr., McLean, VA, 22102
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Pierre Lallement
 (703) 448-4215
Business Contact
Phone: () -
Research Institution
Not Available Future naval combat systems will include wideband radars for high range resolution (HRR) target detection and discrimination functions. However, such functions in large arrays cannot be supported by conventional narrowband beamsteering techniques. TSC proposes a new approach to beamforming in which photonic wavelength division multiplexing (WDM) technology is used to implement an affordable true time-delay (TTD)-assisted synthetic wideband (SWB) HRR radar receiver. SWB processing is a means of increasing the effective bandwidth of existing narrowband phased arrays through time-domain multiplexed radar waveforms. However, SWB alone poses severe technical challenges in radar resource allocation, dwell times, and overall accuracy. Full TTD beamforming, on the other hand, is intrinsically wideband but has proven prohibitively costly to implement on a large scale. By combining the two beamforming approaches, a HRR radar receiver will be developed requiring only partial TTD implementation to achieve performance comparable to a truly instantaneously wideband system. This will involve synthetic wideband processing to reduce the level of instantaneous bandwidth required for HRR, while implementing partial TTD to reduce the difficulties inherent in the SWB approach by effectively reducing the aperture size. Photonic WDM technology for partial TTD offers significant advantages in cost, performance and availability over other techniques.

* information listed above is at the time of submission.

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government