Abstract
A Global Positioning Sysem (GPS)-independent, stratolite (SL)-based navigation system is introduced and an optimum configuration of SLs is proposed by estimating its Geometric Dilution of Precision (GDOP) value. Improvement in GDOP due to augmentation of SL-based navigation system with geostationary satellite(s) is investigated. For this purpose, GDOP is estimated for various geometries of SLs/geostationary satellites. Furthermore, effect on DOP due to augmentation of SLs with GPS is examined. When a constellation of four SLs is augmented with GPS over Hyderabad region of India, GDOP is improved to 3.25 (max) from 4.45 (max).
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