A Signal Processing Algorithm Based on 2D Matched Filtering for SSAR
Table 1
Parameter values for SSAR signal processing simulations.
Radar parameters
Carrier frequency
300 MHz
PRI
1,000 μs
Pulse width ()
100 μs
Bandwidth ()
10 MHz
Rotational speed of the sector-scan antenna ()
36°/s
3 dB beam width
30°
Transmitting signal power ()
10 kW
Transmitting antenna gain ()
30 dB
Receiving antenna gain ()
30 dB
Initial angle of the antenna rotation
0°
Line-scan range of the antenna
[1.8, 1.5] wavelength/2
Line-scan cycle of the antenna
PRI
Target parameters (true values)
Number
4
Slant range
[, 100, 103, 105] km
Azimuth
[18, 20.5, 22, 24]°
Velocity
[, 150, 180, 200] m/s
Target heading angle (relative to the radial direction)
[, 0, 0, 0]°
RCS
[0.1, 0.1, 0.1, 0.1] m2
Simulation parameters
SNR (receiving point)
−33 dB
Range window
[0.6, 0.76] PRI /2 km
Azimuth window
[, 42]°
Signal format
LFM in the exponential form
Sampling rate (range dimension)
1.2B (analytic signals)
Notes. The noise is assumed to be Gaussian white noise; transmission losses are not considered but can be included in the SNR; and the false-alarm probability is set to 10−6 for range detection. 1.2B: 1.2 times bandwidth (B).