Gravity field error analysis: Applications of global positioning system receivers and gradiometers on low orbiting platforms

摘要: The concept of a Global Positioning System (GPS) receiver as tracking facility and gradiometer separate instrument on low orbiting platform offers unique tool to map the Earth's gravitational field with unprecedented accuracies. former technique allows determination spacecraft's ephemeris at any epoch within 3–10 cm; latter permits measurement tensor second-order derivatives gravity 0.01–0.0001 Eotvos units depending type gradiometer. An analytical is described applied for an error analysis parameters from GPS observation types. Results are discussed configuration proposed Aristoteles, indicating that “GPS only” solution may be computed up degree order 85, whereas combined GPS/gradiometer experiment result in acceptable 240.