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Originally Posted by raduz
Quote:
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Originally Posted by Dantenoc
For an extreme example, imagine yourself following a paralel course to the target, and traveling at the exact same speed... under this scenario, you will observe no bearing change whatsoever no matter how long a time you keep watching the target. The computer will think that the target is stationary when in "reality" It is moving just as fast as you are.
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In such a case, you can try to obtain the targets speed via hydrophone, counting the RPM. It is reliable and not affected by weather. |
Only if you have a reference point for how many RPMs equal a knot and such. As I understand it its been altered many times and theres no standard chart for it now.