Shadow sector vs Blind sector Shadow sectorPartly.Radar echoes can be received but partly.Obstructions due to funnels and masts near the radar antenna.Occur within the smaller angles sub-tended by the obstruction. Blind sectorFully.Radar echoes can not be received at all.Obstructions due to funnels and masts near the radar antenna.Occur within the larger angles sub-tended by the … Read moreShadow sector vs Blind sector
Pulse repetition frequency, Beam width, Relationship between PRF and range Pulse repetition frequency PRFPRF – pulse repetition frequencyOr, PRR – pulse recurrence rate.Number of pulses sent out per second.Radar scanner sent out radar pulse.Normally 500 to 4000 pulses per second.PRF varies with range scale. Beam widthWidth of a transmitted radar beam.Two types: HBW, VBWHorizontal beam … Read morePulse repetition frequency, Beam width, Relationship between PRF and range
Why racon position appear more than actual? Radar beacon. Give range and bearing. Like a transponder that emits characteristics signal when triggered by radar pulse. In racon, the radar transponder beacon receive radar pulse, amplify, and then re-transmit. So, there is a time delay. Due to this time delay, the racon position appear to be … Read moreWhy racon position appear more than actual?
Ramark vs Racon difference Radar marker (ramark)Radar marker.Give bearing only.Radial line from the centre.Series of dots.Transmits continuously or at intervals.X band and S band Radar. RaconRadar beacon.Give range and bearing.Like a transponder that emits characteristics signal when triggered by radar pulse.
Echo enhancer, Transponder, Rose flare Echo enhancerModern radars have echo enhancer.Echo enhancer make small targets to look bigger.Echo enhancer should be switched off when not required.Useful in heavy clutter condition.Downside – Distort the radar picture. TransponderRadar transponder.Emits characteristics signal when triggered by radar pulse.Enhance visibility.Used in SAR operation.Only used with certain type of radar. Rose … Read moreEcho enhancer, Transponder, Rose flare