Carrier phase delay altimetry with GPS‐reflection/occultation interferometry from low Earth orbiters

Carrier phase delay altimetry with GPS‐reflection/occultation interferometry from low Earth orbiters
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利用近地轨道飞行器的 GPS 反射/掩星干涉测量进行载波相位延迟测高

DOI:
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发表时间:
2004
期刊:
影响因子:
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通讯作者:
G. Hajj
G. Hajj
中科院分区:
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文献类型:
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作者:
E. Cardellach;C. Ao;M. de la Torre Juárez;G. Hajj

文献摘要

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从地球表面反射出来的GPS信号可以被隐蔽的近地轨道飞行器(leo)上的接收器探测到。在本工作中,对反射掩星信号和直接掩星信号进行载波相位干涉测量,以推断其在厘米误差下的相对延迟。我们的分析表明,使用这种技术可以正式达到表面高度的亚米灵敏度。讨论了该方法在极地冰测高中的潜在应用。
GPS signals reflected off the surface of the Earth can be detected by receivers aboard occulting Low Earth Orbiters (LEOs). In this work, carrier phase interferometry between the reflected and direct occultation signals is performed to infer its relative delay at centimetric error. Our analysis shows that submeter sensitivity on the surface heights can formally be reached with this technique. The potential applications to polar ice altimetry are discussed.