Synthetic aperture radar PRF
A side-looking airborne SAR operating in broadside moves with a velocity of 100 m/s. The sensor has an aperture dimension of 1.5 m in azimuth. Compute the radar pulse repetition frequency. Assume an antenna roll-off factor of 1.2.
daz = 1.5; v = 100; ka = 1.2
ka = 1.2000
Compute the SAR pulse repetition frequency.
prf = sarprf(v,daz,'RollOff',ka)
prf = 160
v— Sensor velocity
Sensor velocity in meters per second, specified as a positive real scalar or vector.
daz— Antenna width in azimuth direction
Antenna width in the azimuth direction in meters, specified as a positive real scalar or a vector.
comma-separated pairs of
the argument name and
Value is the corresponding value.
Name must appear inside quotes. You can specify several name and value
pair arguments in any order as
RollOff— Antenna roll-off factor
1(default) | positive real scalar
Antenna roll-off factor, specified as a positive real scalar. This argument provides a safety factor that prevents mainlobe returns from aliasing in the pulse repetition frequency (PRF) time interval. Adjust the roll-off factor to make the PRF greater than the mainlobe Doppler bandwidth.
ConeAngle— Doppler cone angle
90(default) | scalar in the range [
Doppler cone angle in degrees, specified as a scalar in the range [
180]. This argument identifies the direction toward the scene
relative to the direction of motion of the array.