Volume 39 Issue 2
Mar.  2019
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GUO Ganggang, TU Cui, HU Xiong, WU Xiaocheng, WEI Feng, SONG Liang. Analysis of Airborne Acoustic Wave Wind-metering of the Near Space[J]. Chinese Journal of Space Science, 2019, 39(2): 200-204. doi: 10.11728/cjss2019.02.200
Citation: GUO Ganggang, TU Cui, HU Xiong, WU Xiaocheng, WEI Feng, SONG Liang. Analysis of Airborne Acoustic Wave Wind-metering of the Near Space[J]. Chinese Journal of Space Science, 2019, 39(2): 200-204. doi: 10.11728/cjss2019.02.200

Analysis of Airborne Acoustic Wave Wind-metering of the Near Space

doi: 10.11728/cjss2019.02.200
  • Received Date: 2017-11-30
  • Rev Recd Date: 2018-06-22
  • Publish Date: 2019-03-15
  • A new in-situ method for atmospheric wind detection of the Near Space is proposed in this paper. The time delay difference of acoustic wave propagation is used to measure the wind. The principle of this method is introduced. The source and accuracy of wind measurement error are analyzed. The frequency and propagation distance of the signal are selected, by analyzing the attenuation of acoustic waves at the height of the Near Space. And the accuracy of acoustic time delay estimation with different SNRs is simulated. The results show that the accuracy of wind measurement by this method can reach a high level of 0.2 m·s-1 at the height of 20∼50 km with the propagation distance of 2∼5 m, the distance measurement accuracy of 1 mm, the platform velocity measurement accuracy of 0.1 m·s-1, and SNR is more than -2 dB, and the time delay measurement precision is less than 1μs.

     

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