While the beam width has to be up to 60◦ for Luojia-1A satellite to achieves maximum service coverage. Hence the satellite PCV also has different characteristics. 4. The ionosphere delay of the ranging signals. Luojia-1A satellite is moving in the F2 layer of the ionosphere, while most ...
Principe Received: 14 December 2015; Accepted: 23 March 2016; Published: 1 April 2016 Abstract: Acoustic signals are an ideal source of diagnosis data thanks to their intrinsic non-directional coverage, sensitivity to incipient defects, and insensitivity to structural resonance characteristics. However ...
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