The Efect of Antenna Patterns on the Performance of Dual-Antenna Radar Airborne Moving Target Indicators

A Channel Equalization Approach using the Spatial Correlation Property of Clutters

“…As a result, the estimated correlation coefficient gives a wrong result. The adaptive DPCA in Doppler domain is used to suppress the clutter, and the improve factor (IF) I of the dual-channel adaptive clutter suppression is given by [11] 1 1 y I    (6) Before equalization, the average correlation coefficient of the mainlobe clutter in Doppler domain is about 0.9, thus the IF of the adaptive clutter suppression is about 10dB. After equalization, the average correlation coefficient of the mainlobe clutter improves to 0.98, and the IF of the adaptive clutter suppression will reach to 17dB.…”

“…The geo-metry of the system with two antennas, which are mounted on the aircraft and the distance is d along the aircraft's flight direction, is shown in Fig. 2 [6]. The antenna 0 transmits a series of linear frequency modulation (LFM) pulses while the aircraft is flying along the horizontal direction with a constant velocity v, and both antennas receive the clutters scattered by the ground at the same time.…”

Evaluation of noise and clutter induced relocation errors in SAR MTI

“…, COS 0,, M 1 (2) 0, <<I, 0, < < I It is also assumed that the radar PRF is high enough (relative to the maximum expected target Doppler), such that main lobe clutter interference relates to the zero and the first PRF lines only ( i.e., k = 0 and k = 1 in (1)). The angular positions of the competing clutter are evaluated using (l) …”

“…It therefore allows the detection of slow moving targets that are otherwise masked by main lobe clutter [2]- [3]. The discussion in [2], [3] relates to general AMTI applications. The use of a two port interferometer antenna in relation to SAR-MTI is discussed in [l], [4].…”