Noncausal adaptive spatial clutter mitigation in monostatic MIMO radar: fundamental limitations
| dc.contributor.author | Abramovich, Y.I. | |
| dc.contributor.author | Frazer, G.J. | |
| dc.contributor.author | Johnson, B.A. | |
| dc.date.issued | 2010 | |
| dc.description.abstract | The problem of a point target detection masked by clutter distributed over range and Doppler, including the range and Doppler of the target, is considered for a multimode propagation scenario commonly encountered in quasimonostatic HF over-the-horizon radars (OTHR). Here, a clutter signal spread in Doppler frequency due to propagation via a disturbed ionospheric layer competes with a target and narrowband clutter returns propagating via a stable ionospheric layer with the same group delay (radar range). Mitigation over all ranges of spread clutter propagating via a "mixed mode" path with indistinguishable direction- of-arrival (DoA) relative to the target requires (potentially adaptive) transmit beamforming to exploit the direction-of-departure (DoD) difference, which varies as a function of radar range. This range-dependent beamforming can be implemented only via the use of multiple-input multiple-output radar technology. In this paper, we explore the fundamental limitations that exist for the maximal dimension of the area in range-Doppler space occupied by spread clutter and the required properties (cardinality) of the orthogonal waveform set for efficient spread clutter mitigation. | |
| dc.identifier.citation | IEEE Journal on Selected Topics in Signal Processing, 2010; 4(1):40-54 | |
| dc.identifier.doi | 10.1109/JSTSP.2009.2038966 | |
| dc.identifier.issn | 1932-4553 | |
| dc.identifier.issn | 1941-0484 | |
| dc.identifier.uri | https://hdl.handle.net/1959.8/135238 | |
| dc.language.iso | en | |
| dc.publisher | IEEE | |
| dc.relation.funding | Defence Science and Technology Organisation | |
| dc.rights | Copyright 2010 IEEE | |
| dc.source.uri | https://doi.org/10.1109/JSTSP.2009.2038966 | |
| dc.subject | array signal processing | |
| dc.subject | clutter mitigation | |
| dc.subject | multiple-input multiple-output (MIMO) radar | |
| dc.subject | over-the-horizon radar | |
| dc.subject | transmit beamforming | |
| dc.title | Noncausal adaptive spatial clutter mitigation in monostatic MIMO radar: fundamental limitations | |
| dc.type | Journal article | |
| pubs.publication-status | Published | |
| ror.mmsid | 9915910603801831 |