Four band differential radiometer for monitoring LNG vapors
摘要
The development by JPL of a four band differential radiometer (FBDR) which is capable of providing a fast rate of response, accurate measurements of methane, ethane, and propane concentrations on the periphery of a dispersing LNG cloud. The FBDR is a small, low power, lightweight, portable instrument system that uses differential absorption of near infrared radiation by the LNG cloud as a technique for the determination of concentration of the three gases as the LNG cloud passes the instrument position. Instrument design and data analysis approaches are described. The data obtained from the FBDR prototype instrument system deployed in an instrument array during two 40 cubic meter spill tests are discussed.
引用本文（GB/T 7714）
John J. Simmonds. Four band differential radiometer for monitoring LNG vapors[J]. NASA STI Repository (National Aeronautics and Space Administration), 1981.
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