Volume 35 Issue 6
Nov.  2015
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Xu Xiyu, Liu Heguang, Yang Shuangbao. Echo of HF-band Radar Altimeter from Mars Based on a Multi-layer Media Model[J]. Journal of Space Science, 2015, 35(6): 746-754. doi: 10.11728/cjss2015.06.746
Citation: Xu Xiyu, Liu Heguang, Yang Shuangbao. Echo of HF-band Radar Altimeter from Mars Based on a Multi-layer Media Model[J]. Journal of Space Science, 2015, 35(6): 746-754. doi: 10.11728/cjss2015.06.746

Echo of HF-band Radar Altimeter from Mars Based on a Multi-layer Media Model

doi: 10.11728/cjss2015.06.746
  • Received Date: 2014-08-11
  • Rev Recd Date: 2015-06-30
  • Publish Date: 2015-11-15
  • The detection of water in Mars is currently one of the most striking issues in deep space detection. High Frequency (HF) radar altimeter has good penetrating ability and can measure the range and power simultaneously. In this paper, the principles and design of the altimeter system were presented, the interaction between the altimeter electromagnetic pulses and multi-layer smooth media was deduced, and the model of the echo power with respect to the time delay was extracted. Besides, the effects of Mars surface roughness were also considered. Finally, two typical Mars multi-layer models were adopted, and the dielectric constants and the altimeter echo waveforms were simulated. Results of the simulation show that the vertical dielectric constant profile of Mars subsurface could be retrieved by HF radar altimetry, and the water in Mars could be identified in certain cases.

     

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