Imaging Algorithm for Sea-Surface Ship Targets Based on Block Sparsity

Table 1

Simulation parameters of surface ships.

Carrier frequency (GHz)	1.5
Scene center slant range (km)	3
Carrier speed (m/s)	300
Number of phased array antennas	10
Antenna spacing (m)	0.6
Pulse repetition frequency (Hz)	600
Transmit pulse width (us)	1.5
Transmit bandwidth (MHz)	150
A/D sampling rate (MHz)	300
Initial coordinates of ship 1 (X, Y)	(−80, −60)
Ship radial velocity (Vr) (m/s)	0
Ship along velocity (Va) (m/s)	0
Initial coordinates of ship 2 (X, Y)	(0, 0)
Ship radial velocity (Vr) (m/s)	40
Ship along velocity (Va) (m/s)	20
Initial coordinates of ship 3 (X, Y)	(100, 120)
Ship radial velocity (Vr) (m/s)	−20
Ship along velocity (Va) (m/s)	−40