Multi-Axis Doppler Direction Finder System for Relative Position and Attitude Determination

Award Information
Agency:
Department of Defense
Branch
Defense Advanced Research Projects Agency
Amount:
$749,920.00
Award Year:
2009
Program:
SBIR
Phase:
Phase II
Contract:
W31P4Q-09-C-0272
Agency Tracking Number:
07SB2-0549
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
TETHERS UNLIMITED, INC.
11711 N. Creek Pkwy S., Suite D113, Bothell, WA, 98011
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
877425330
Principal Investigator:
Nestor Voronka
VP & Chief Technologist
(425) 486-0100
voronka@tethers.com
Business Contact:
Robert Hoyt
President, CEO & Chief Sc
(425) 486-0100
hoyt@tethers.com
Research Institution:
n/a
Abstract
Interest in formation and cluster-based satellite applications has grown considerably in recent years. These applications require a relative position and attitude sensor to address challenges such as station keeping, collision avoidance, and relative orientation control. Existing sensors that have been in use for years on missions requiring vehicle docking are typically not suitable for use on microsatellites due to field of view, mass and power limitations. In this Phase II effort, we propose to design and fabricate a proto-flight RF-RelNav sensor system that does not rely on external references such as stars or GPS signals, and then test the operation of multiple units integrated into representative small-spacecraft models. Sensor performance is expected to surpass 1o angular accuracy in all three axes, 0.1 m range resolution, and 1 Hz update rates for small numbers of spacecraft. Host impacts are expected to be only 2.5 kg of mass, 750 cm3 internal volume, and 5 W of power. The proposed effort will mature the RF-RelNav technology by verifying its operational characteristics through ground testing and by developing a qualifiable design traceable to at least Class-C hardware.

* information listed above is at the time of submission.

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