USA flag logo/image

An Official Website of the United States Government

Advanced Adaptive Beamforming/Nullsteering CRPA with Robust Bias Compensation…

Award Information

Agency:
Department of Defense 		Branch:
N/A 		Award ID:
 Program Year/Program:
2011 / SBIR
Agency Tracking Number:
N111-015-1146 		Solicitation Year:
2011 		Solicitation Topic Code:
N111-015 		Solicitation Number:
2011.1
Small Business Information
Lightning Ridge Technologies
4106 Aikins Ave SW Seattle, WA -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2011
Title: Advanced Adaptive Beamforming/Nullsteering CRPA with Robust Bias Compensation for Rotorcraft Precision Navigation
Agency: DOD
Contract: N68335-11-C-0281
Award Amount: $79,926.00
 

Abstract:

Lightning Ridge Technologies advances the state of the art of Controlled Reception Pattern Antennas (CRPAs) for rotorcraft by developing an adaptive beamsteering technology to significantly mitigate hostile jamming while estimating and cancelling GPS signal variations that plague rotorcraft operations. These variations include but are not limited to rotor interference, manufacturing variability and electronic mutual coupling in the antennas, and airframe and environmental changes that alter signal scattering, diffraction, and reflection. Most problematic for precision navigation and adaptive CRPA processing, the main rotor states contributing to rotor blade modulation (RBM) are currently not measured in real-time on operational helicopters (e.g., the MH-60). The proposed architecture utilizes a two part estimation scheme to account for the biases. Carrier-phase biases are quickly varying, and should be calibrated in real-time. Pseudorange errors can be smoothed over longer periods, and these biases cause less effect on the sensitive beamsteering algorithms; thus pseudorange biases should be calibrated off-line. Lightning Ridge Technologies"experts have designed CRPA systems to land jets on aircraft carriers (Navy JPALS Program); this prior knowledge enables us to create a feasible approach providing significant benefits to rotorcraft aviation.

Principal Investigator:

David Lorenzo
Research Lead and Co-Foun
(650) 793-4876
dsd@lrtechno.com

Business Contact:

Chad Jennings
CEO and Co-Founder
(650) 430-0458
chad@lrtechno.com
Small Business Information at Submission:

Lightning Ridge Technologies
4106 Aikins Ave SW Seattle, WA -

EIN/Tax ID: 263221746
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No