Contents
What is range Doppler algorithm?
Range Doppler Algorithm (RDA) STEP 1. Pulse compression is a LTIV filter. It is straight forward to implement in the Fourier domain. Range FFT on raw data to transform to range-frequency / azimuth-space domain. Apply range-domain matched filter for pulse compression.
How does monostatic radar work?
Monostatic radars employ a single stable reference oscillator, from which all timing and frequency sources are derived [21]. This is a necessary consideration in order for the radar to be coherent, as received waveforms are “phase compared” to the transmitted reference signal.
What is monostatic and bistatic radar?
Bistatic radar is a radar system comprising a transmitter and receiver that are separated by a distance comparable to the expected target distance. Conversely, a radar in which the transmitter and receiver are co-located is called a monostatic radar.
What is range cell migration?
Range cell migration (RCM) occurs after range compression and needs to be corrected before azimuth processing. Due to the difficulty of range cell migration correction (RCMC) in SAR, a corresponding correction method based on envelope correlation method (ECM) is proposed.
Where is bistatic radar used?
Usually, the seperation distance between the transmitter and the receiver are in the order of the expected distance to the target. A bistatic radar is especially useful in case where the energy reflected by the target is very low,e.g. in the case of longe range radar and weather radar.
Why it is called Synthetic Aperture Radar?
As transmission and reception occur at different times, they map to different positions. The well ordered combination of the received signals builds a virtual aperture that is much longer than the physical antenna width. That is the source of the term “synthetic aperture,” giving it the property of an imaging radar.
What is the primary function of Doppler radar?
Explanation: The primary function of a Doppler radar is to determine the velocity vector of an aircraft with respect to the ground. The velocity component can be integrated into distance travelled and hence Doppler radar can be used as a primary sensor for dead reckoning.