Multi-dwell matched-field altitude estimation for over-the-horizon radar

Journal Article

In previous work, electromagnetic matched-field processing was proposed for estimating aircraft altitude with over-the-horizon radar using a single radar dwell. Although this approach exploits the altitude dependence of unresolved multipath returns in complex delay-Doppler space, its performance suffers in situations where the coherent integration time (CIT) of the radar is short. To overcome this limitation, this paper presents a matched-field estimation approach which uses multiple consecutive dwells on the target. The technique exploits the altitude dependence of dwell-to-dwell shape changes in the complex delay-Doppler multipath return. Monte Carlo simulations results indicate that using short CITs, moderate signal bandwidth, and a 30 second revisit rate, multi-dwell matched-field estimation can achieve better than 5,000 ft. accuracy after as few as four radar dwells. The results of processing actual radar data for a high flying commercial aircraft of known altitude are presented which serve to validate the technique. © 1998 IEEE.

Full Text

Duke Authors

Cited Authors

  • Papazoglou, M; Krolik, JL

Published Date

  • January 1, 1998

Published In

Volume / Issue

  • 4 /

Start / End Page

  • 2533 - 2536

International Standard Serial Number (ISSN)

  • 1520-6149

Digital Object Identifier (DOI)

  • 10.1109/ICASSP.1998.681667

Citation Source

  • Scopus