| 摘要 |
A disclosure in which one or more objects, such as aircraft or other vehicles, moving in a system of coordinates transmit pulse signals to a large number of fixed position receiving stations all linked to common computer means, and the computer means uses one of several well known techniques such as multilateration, time-of-arrival, differential time-of-arrival, etc., of the pulse signals to solve for position of the transmitting object, and in which weighting is used to minimize errors. Such weighting includes selective of optimum receiving stations from a larger number of available stations according to geometric criteria, weighting the value of the data delivered by the various stations in order to weight most heavily the best data chosen according to predetermined criteria, and minimizing the errors by one of several different techniques including the use of iterative computations converging upon a location which continuously grows more accurate, or by other error minimizing techniques such as the technique of least squares fitting.
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