We present a high-precision ranging and range-rate measurement system via an optical-ranging or combined ranging-communication link. A complete bench-top optical communication system was built. It included a ground terminal and a space terminal. Ranging and range rate tests were conducted in two configurations. In the communication configuration with 622 data rate, we achieved a two-way range-rate error of 2 μm/s, or a modified Allan deviation of 9×10−15 with 10 second averaging time. Ranging and range-rate as a function of Bit Error Rate of the communication link is reported. They are not sensitive to the link error rate. In the single-frequency amplitude modulation mode, we report a two-way range rate error of 0.8 μm/s, or a modified Allan deviation of 2.6×10−15 with 10 second averaging time. We identified the major noise sources in the current system as the transmitter modulation injected noise and receiver electronics generated noise. A new improved system will be constructed to further improve the system performance for both operating modes.


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    Title :

    High-precision ranging and range-rate measurements over free-space-laser communication link


    Contributors:
    Yang, Guangning (author) / Lu, Wei (author) / Krainak, Michael (author) / Sun, Xiaoli (author)


    Publication date :

    2016-03-01


    Size :

    1053851 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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