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2. Radar signal characteristics - Wikipedia

   en.wikipedia.org/wiki/Radar_signal_characteristics

   Pulse width also constrains the range discrimination, that is the capacity of the radar to distinguish between two targets that are close together. At any range, with similar azimuth and elevation angles and as viewed by a radar with an unmodulated pulse, the range resolution is approximately equal in distance to half of the pulse duration ...

3. Pulse-Doppler radar - Wikipedia

   en.wikipedia.org/wiki/Pulse-Doppler_radar

   The range resolution is the minimal range separation between two objects traveling at the same speed before the radar can detect two discrete reflections: = (). In addition to this sampling limit, the duration of the transmitted pulse could mean that returns from two targets will be received simultaneously from different parts of the pulse.

4. Pulse compression - Wikipedia

   en.wikipedia.org/wiki/Pulse_compression

   Pulse compression is a signal processing technique commonly used by radar, sonar and echography to either increase the range resolution when pulse length is constrained or increase the signal to noise ratio when the peak power and the bandwidth (or equivalently range resolution) of the transmitted signal are constrained.

5. Range ambiguity resolution - Wikipedia

   en.wikipedia.org/wiki/Range_ambiguity_resolution

   Range ambiguity resolution is a technique used with medium pulse-repetition frequency (PRF) radar to obtain range information for distances that exceed the distance between transmit pulses. This signal processing technique is required with pulse-Doppler radar. [1] [2] [3]

6. Pulse-repetition frequency - Wikipedia

   en.wikipedia.org/wiki/Pulse-repetition_frequency

   Range and velocity can both be identified using medium PRF, but neither one can be identified directly. Medium PRF is from 3 kHz to 30 kHz, which corresponds with radar range from 5 km to 50 km. This is the ambiguous range, which is much smaller than the maximum range. Range ambiguity resolution is used to determine true range in medium PRF radar.

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. Weather radar - Wikipedia

   en.wikipedia.org/wiki/Weather_radar

   Thus the volume of air that a radar pulse is traversing is larger for areas farther away from the station, and smaller for nearby areas, decreasing resolution at farther distances. At the end of a 150 – 200 km sounding range, the volume of air scanned by a single pulse might be on the order of a cubic kilometer. This is called the pulse ...

9. Radar engineering - Wikipedia

   en.wikipedia.org/wiki/Radar_engineering

   The range and velocity of a target are detected through pulse delay ranging and the Doppler effect (pulse-Doppler), or through the frequency modulation (FM) ranging and range differentiation. The range resolution is limited by the instantaneous signal bandwidth of the radar sensor in both pulse-Doppler and frequency modulated continuous wave ...