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2. Moving target indication - Wikipedia

   en.wikipedia.org/wiki/Moving_target_indication

   Phase jitter, Doppler effects, and environmental influences limit MTI sub-clutter visibility Measure of Performance to about 25 dB improvement. This allows moving objects about 300 times smaller to be detected in close proximity to larger stationary objects. Pulse-Doppler signal processing is required to achieve greater sub-clutter visibility.

3. Pulse-Doppler radar - Wikipedia

   en.wikipedia.org/wiki/Pulse-Doppler_radar

   A pulse-Doppler radar is a radar system that determines the range to a target using pulse-timing ... Antenna motion for pulse-Doppler must be as slow as radar using MTI.

4. Radar signal characteristics - Wikipedia

   en.wikipedia.org/wiki/Radar_signal_characteristics

   Radar Pulse Train. The carrier is an RF signal, typically of microwave frequencies, which is usually (but not always) modulated to allow the system to capture the required data. In simple ranging radars, the carrier will be pulse modulated and in continuous wave systems, such as Doppler radar, modulation may not be required

5. List of radar types - Wikipedia

   en.wikipedia.org/wiki/List_of_radar_types

   Ships and planes are metal, and reflect radio waves. The radar measures the distance to the reflector by measuring the time of the round trip from emission of a pulse to reception, dividing this by two, and then multiplying by the speed of light. To be accepted, the received pulse has to lie within a period of time called the range gate. The ...

6. Doppler radar - Wikipedia

   en.wikipedia.org/wiki/Doppler_radar

   AN/APN-81 Doppler radar navigation system, mid-1950s. Doppler radar tends to be lightweight because it eliminates heavy pulse hardware. The associated filtering removes stationary reflections while integrating signals over a longer time span, which improves range performance while reducing power. The military applied these advantages during the ...

7. Pulse-Doppler signal processing - Wikipedia

   en.wikipedia.org/wiki/Pulse-Doppler_signal...

   Pulse Doppler radar may have 50 or more pulses between the radar and the reflector. Pulse Doppler relies on medium pulse repetition frequency (PRF) from about 3 kHz to 30 kHz. Each transmit pulse is separated by 5 km to 50 km distance. Range and speed of the target are folded by a modulo operation produced by the sampling process.

8. Space-time adaptive processing - Wikipedia

   en.wikipedia.org/wiki/Space-time_adaptive_processing

   For ground-based radar, cluttered returns tend to be at DC, making them easily discriminated by Moving Target Indication (MTI). [3] Thus, a notch filter at the zero-Doppler bin can be used. [2] Airborne platforms with ownship motion experience relative ground clutter motion dependent on the angle, resulting in angle-Doppler coupling at the ...

9. Continuous-wave radar - Wikipedia

   en.wikipedia.org/wiki/Continuous-wave_radar

   Continuous-wave radar (CW radar) is a type of radar system where a known stable frequency continuous wave radio energy is transmitted and then received from any reflecting objects. [1] Individual objects can be detected using the Doppler effect , which causes the received signal to have a different frequency from the transmitted signal ...