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    1. This paper introduces the importance of ranging for EPON, the principle of time-stamp ranging based on MPCP, and delay compensation.
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    2. A wire rope ranging device which is composed of cylindrical cam is introduced. It can be used on small type winch for prevention of trouble caused by wire rope confused ranging.
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    3. A robust scheme fit for inter-satellite ranging network is designed by analyzing the particularity of the inter-satellite ranging network.
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    4. Micro-pulse laser ranging is a new method in satellite laser ranging.
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    5. Micro-pulse laser ranging is a new method in satellite laser ranging.
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    Narrow your wide-angle The most effective use of a wide-angle lens
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    wide-band frequency spectrum analyser wide-band spectrum analyzer
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    wide-band oscilloscope wide-scope
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