Differential positioning experiment using two geostationary satellites

Abstract

A ranging and positioning system for a ship or an aircraft using two geostationary satellites is described. This system has a ranging and positioning accuracy of 100 m and 1 km.Experiments to estimate this system were performed using a ship in the Pacific Ocean in a normal and a differential modes.This system leads to the development of fundamental ranging and positioning techniques for the cooperated independent surveillance.

Filter method and its consistency of double-star position/SINS integrated system

“…The factors that affect the Double-star positing system accuracy are the ephemeris error, the distancemeasurement error, the height error [4,5] . The ephemeris error affects the accuracy of the Double-star positing system greatly, but the Chinese Double-star positing system uses differential technique, after differential revision, the bigger ephemeris error is equivalent to a smaller distance-measurement error [5] .…”

“…According to the positing measurement equation and the position relationship between the user and the satellites in the space rectangle coordinate system [4,5] , we can deduce the equations as follows: represents the user's height error; and 0 m represents the equivalent distance-measurement error after differential revision.…”

Regional navigation system using geosynchronous satellites and stratospheric airships

“…For example, Japan is proceeding with the Multifunctional Transport Satellite-based Augmentation System (MSAS) program to augment the existing GPS constellation -2 - [9]. Japan has also performed a differential positioning experiment using two geostationary satellites [10].…”