Poster 4.3
Analysis of terrain scattered interference mitigation

Anders Nelander - Swedish Defence Research Agency (FOI)

Wed, 28 April 2004, 3:20 PM - 4:10 PM

Abstract

Terrain scattered interference mitigation for airborne radar has been studied at FOI and deconvolution methods for interference suppression have been proposed. This paper describes an analysis of the terrain scattered interference mitigation performance for different conditions and limitations. The direct path signal must be accurately estimated without strong multipath errors. A time limited impulse response is required to avoid too much suppression of target signals. Small relative Doppler shift errors are required between the direct path and the terrain scattered paths. Several strong jamming signal sources can not be resolved and suppressed. Receiver blocking gives errors in the impulse response estimate. Clutter signals must be suppressed for accurate impulse responses. Numerical stability must be ensured in the inverse filtering and deconvolution operations.

Bio

Anders Nelander received the Masters degree in Electrical Engineering in 1973 from the Royal Institute of Technology in Stockholm, Sweden. He has worked at the Swedish Defence Research Agency (FOI) since 1975 in Radar Systems Engineering. His earlier interests have been in clutter modeling, high resolution radar, SAR and multistatic radar. His present work concerns radar systems using digital array antennas, wide band multifunction radar and radar system design. He is a member of IEEE and an associated member of the Swedish National Committee of URSI.