Position calculating method and position calculating device

摘要

Position calculating methods and devices are described. Satellite information may be calculated, which includes satellite position, satellite movement speed, and satellite movement direction of a positioning satellite. A pseudo distance between the positioning satellite and a user may be calculated based on a satellite signal received from the positioning satellite. The position of the user may be calculated using the satellite information and the pseudo distance in executing a convergence calculation with positioning information for a reference satellite, thereby eliminating a time error term from unknown quantities.

主权项

1. A method of calculating a position of a receiver, the receiver including a position calculating device, the method comprising:
receiving, by the position calculating device, respective satellite signals from a plurality of satellites at the receiver; deriving, by the position calculating device, satellite information, including a satellite position and a satellite velocity corresponding to each of the plurality of satellites at an instant of time; and calculating, by the position calculating device, the position of the receiver using a set of equations, the set of equations including an equation for each satellite representing a time error of a time counted by a local clock of the position calculating device, the time error being equal for each of the satellites, wherein the equation for each satellite representing the time error is a function of at least the corresponding satellite information, a pseudo distance calculated from the corresponding satellite signal at the receiver, a relative speed vector between the receiver and each satellite, and a clock bias of the local clock.