Howtosignalprocessing
- How does pulse Doppler work?
- What is range Doppler processing?
- What is pulse timing technique?
- What is difference between MTI and pulse Doppler radar?
How does pulse Doppler work?
In pulse Doppler radar, the range is estimated by binning the returns of the individual pulses by their time of arrival, which is proportional to the range. The Doppler processing is done by coherently measuring the phase shifts across many pulses. In this way, both range and velocity of targets can be determined.
What is range Doppler processing?
If a transmitter platform is stationary, a range-Doppler map shows a response from stationary targets at zero Doppler. For targets that are moving relative to the transmitter platform, the range-Doppler map shows a response at nonzero Doppler values.
What is pulse timing technique?
PTM involves pulse train and sampling on the time axis of the signal. We can also define it as a modulation technique of time intervals between the successive pulse of constant amplitude and duration. PTM is a combination of PWM (Pulse Width Modulation) and PPM (Pulse Position Modulation).
What is difference between MTI and pulse Doppler radar?
The MTI radar has a pulse repetition frequency low enough to not have any range ambiguities. It does however have many ambiguities in the Doppler domain. The pulse Doppler radar, on the other hand, is just the opposite. It has a prf large enough to avoid Doppler ambiguities, but it can have numerous range ambiguities.
