SIMULTANEOUS ORBIT DETERMINATION WITH PHYSICAL CONNECTEDNESS

Award Information
Agency:
National Aeronautics and Space Administration
Amount:
$498,043.00
Program:
SBIR
Contract:
N/A
Solitcitation Year:
N/A
Solicitation Number:
N/A
Branch:
N/A
Award Year:
1986
Phase:
Phase II
Agency Tracking Number:
1727
Solicitation Topic Code:
N/A
Small Business Information
Applied Technology Associates
444 Castro Street, Suite 308, Mountain View, CA, 94041
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
N/A
Principal Investigator
 James R. Wright
 Investigator
 () -
Business Contact
Phone: () -
Research Institution
N/A
Abstract
THE INNOVATION, CALLED SIMULTANEOUS ORBIT DETERMINATION, REFERS TO THE SEQUENTIAL SIMULTANEOUS ESTIMATION OF THE ORBITS OF TWO SPACECRAFT (SPACE SHUTTLE AND TDRSS) WHEN TRACKING MEASUREMENTS DEPEND SIMULTANEOUSLY ON BOTH ORBITS. SUCCESSFUL SIMULTANEOUS ORBIT DETERMINATION DEPENDS ON PHYSICAL CONNECTEDNESS. THIS REFERS TO THE USE OF PHYSICALLY CONNECTED MODELING OF RANDOM ACCELERATION ERRORS FOR THE PROCESS NOISE OF THE SEQUENTIAL ORBIT ESTIMATOR; AND IT REFERS TO THE USE OF PHYSICAL PROPERTIES ASSOCIATED WITH RANDOM PHENOMENA OF THE SYSTEM USED TO GENERATE THE TRACKING DATA. OBJECTIVES OF PHASE I ARE: (1) TO COLLECT APPROPRIATE LIVE DOPPLER-SUM TRACKING AND SUPPORT DATA; (2) CONSTRUCT AN EXPERIMENT DESIGN REPORT TO BE USED IN PHASE II TO DEVELOP A LIVE-DATA ENGINEERING TEST-BED. THE OBJECTIVE FOR PHASE II IS TO DEMONSTRATE SIGNIFICANT ORBIT DETERMINATION ACCURACY IMPROVEMENT FOR THE SPACE SHUTTLE ORBIT USING DOPPLER-SUM TRACKING DATA AND THE INNOVATIONS.

* information listed above is at the time of submission.

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