Radar makes the most accurate determination of the __________.
⢠Radar range vs. bearing accuracy in typical marine radar sets ⢠How radar displays distance (range rings, time delay) compared to direction (bearing cursor) ⢠Factors that can distort the shape and size of echoes on a radar screen
⢠Think about which measurement (direction, distance, shape, size) depends most directly on precise timing of the returned pulse. ⢠Which of these four choices is least affected by beam width, target aspect (angle you see it from), or sea clutter? ⢠On your own radar experience or training simulators, which value do you usually trust most when putting a range/bearing line on a target?
⢠Recall that radar measures time between pulse sent and echo receivedâwhat does that translate to physically? ⢠Remember that radar beams have a certain horizontal widthâhow might that impact the apparent direction, shape, or size? ⢠Ask yourself which quantity navigators rely on radar for when plotting on a paper chart: range or bearing?
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