Target Location

Azimuth Estimation

TSC is investigating advanced azimuth estimation techniques on an SBIR program for the Army. TSC is evaluating the target location performance of our proprietary algorithms against slow-moving dismounts and vehicles in both clear and foliated environments. UHF foliage penetration (FOPEN) radars on two UAV platforms provide excellent target location of foliated dismounts under foliage. In simulations, we have located these targets to within 5 meters of their true location.

TSC’s algorithm suite is currently being incorporated into a target tracker and will be evaluated using both measured and high-fidelity simulated data. TSC is addressing terrain elevation, target ghosting, and latency issues. A number of other applications are also being explored including micro- and organic UAVs and airport ground surveillance radars.


 

Overland Target Height Finding

TSC is investigating radar processing techniques for estimating the height of airborne targets for application to a wide variety of airborne platforms.  The new techniques are compatible with the conformal arrays of emerging radar surveillance systems that preclude conventional Space-Time Adaptive Processing (STAP) and monopulse approaches.  Both monostatic and multi-static approaches are being explored.  Additionally, our techniques exploit the interaction of the target with its electromagnetic environment by incorporating auxiliary sources of knowledge including terrain height and land use/land cover information. 

As part of an ongoing SBIR effort, TSC is developing and investigating the multipath exploitation technique for potential application to a fielded USAF surveillance radar platform.  This technique makes use of terrain elevation and land use/land cover information to identify and analyze potential multipath reflection points.  Multiple target height hypotheses are then formulated and resolved using our technique.

Stereoscopic processing, or multilateration, uses the radar range and Doppler measurements from two or more surveillance platforms to estimate the location of the target in 3D.  This technique is compatible with cooperating UAV, satellite and manned aircraft systems being postulated by DARPA and the US Air Force.