Simultaneous Tracking and Ionospheric Model Estimation for NG OTHR

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-11-M-1148
Agency Tracking Number: F103-181-0813
Amount: $99,999.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solicitation Year: 2010
Solicitation Topic Code: AF103-181
Solicitation Number: 2010.3
Small Business Information
141 Providence Rd, Suite 150, Chapel Hill, NC, -
DUNS: 827013470
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Michael Papazoglou
 Senior Scientist
 (919) 294-6835
Business Contact
 Jeffrey Krolik
Title: President
Phone: (919) 619-9903
Research Institution
Robust target tracking and accurate geo-location for over-the-horizon radar (OTHR) are currently limited by clutter-contamination of signal returns and uncertainty in the multi-mode mapping from radar to ground coordinates. In this proposal, we address both these challenges by developing methods which jointly estimate target ground positions and ionospheric model perturbations while optimally associating radar detections across multiple dwells. The proposed Simultaneous Target and Ionospheric Model Estimation (STIME) approach exploits non-maneuvering targets and/or known aircraft flight paths to both geo-locate targets and to track the variations in ionospheric parameters which frequently degrade the performance of current systems. Moreover, by incorporating estimates of ionospheric parameters into the target tracker, STIME greatly simplifies the subsequent association of multi-mode ground tracks. In principle, STIME is applicable to both current and next generation OTH radar. For NGOTHR, the proposed approach maximizes the utility of elevation angle measurements obtained using 2-D transmit and receive arrays by incorporating them early on in the tracking and data association process. BENEFIT: The proposed methods for improving multi-mode OTHR tracking and geo-location in the presence of ionospheric model uncertainty will benefit both current systems used for counter-drug enforcement as well as NGOTHR systems designed for wide-area surveillance of US coastlines in support of homeland defense.

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