Radar resolution: Difference between revisions

Latest revision as of 16:42, 25 April 2012

radar resolution[edit | edit source]

The minimum separation between two targets that permits them to be distinguished by a radar.

The minimum separation in range along a given direction from the radar is one-half the transmitted pulse length. The minimum angular separation at a given range is approximately the 3-dB beamwidth of the radar. These minimum dimensions determine the radar resolution volume. Targets within the volume are not resolved and appear to be merged into a single target on a radar display. Radar resolution is usually of more concern for point targets than for weather echoes, because the latter are beam-filling targets that are considerably larger than the resolution volume.
Compare pulse volume.

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-<div class="definition"><div class="short_definition">The minimum separation between two [[targets]] that permits them to be distinguished  by a [[radar]].</div><br/> <div class="paragraph">The minimum separation in [[range]] along a given direction from the radar is one-half the  transmitted [[pulse length]]. The minimum angular separation at a given range is approximately the  3-dB [[beamwidth]] of the radar. These minimum dimensions determine the [[radar resolution volume]].  Targets within the volume are not resolved and appear to be merged into a single target on  a [[radar display]]. Radar [[resolution]] is usually of more concern for [[point targets]] than for weather  [[echoes]], because the latter are beam-filling targets that are considerably larger than the [[resolution  volume]]. <br/>''Compare'' [[pulse volume]].</div><br/> </div>
+<div class="definition"><div class="short_definition">The minimum separation between two [[targets]] that permits them to be distinguished  by a [[radar]].</div><br/> <div class="paragraph">The minimum separation in [[range]] along a given direction from the radar is one-half the  transmitted [[pulse length]]. The minimum angular separation at a given range is approximately the  3-dB [[beamwidth]] of the radar. These minimum dimensions determine the [[radar resolution volume]].  Targets within the volume are not resolved and appear to be merged into a single target on  a [[radar displays|radar display]]. Radar [[resolution]] is usually of more concern for [[point targets]] than for weather  [[echoes]], because the latter are beam-filling targets that are considerably larger than the [[resolution volume|resolution  volume]]. <br/>''Compare'' [[pulse volume]].</div><br/> </div>
 </div>