Adaptive multiple‐input multiple‐output radar beamforming based on direct data domain approach

Effective coherent integration method for marine target with micromotion via phase differentiation and radon‐Lv's distribution

“…With the development of digital phased array technology, it is possible to detect low‐observable and micromotion target via long‐time integration [20], which is an effective way to improve SCR. However, the performances are still affected by the across range unit (ARU) effect [21], Doppler frequency migration (DFM) [22], and Doppler ambiguity.…”

Minimum sensitivity based robust beamforming with eigenspace decomposition

“…However, this assumption may not be valid due to factors such as direction-of-arrival (DOA) mismatch error, array calibration error, local scattering, near-far spatial signature mismatch and finite sample effect [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Whenever this happens, the output signal-to-interference-plus-noise ratio (SINR) of the SCB degrades significantly.…”

Wideband distributed coherent aperture radar based on stepped frequency signal: theory and experimental results

“…Many literatures on coherent MIMO radar systems have been published in recent years. The waveform diversity enabled coherent MIMO radar significantly improve parameter identifiability [6], allow the direct application of adaptive techniques to achieve high resolution [7] and excellent interference rejection capability [8] and much enhanced flexibility for transmit beam pattern design [9]. Besides, the Cramer–Rao lower bound (CRLB) of target localisation of coherent MIMO radar was presented [10].…”