All DOP GPS optimization

Details All DOP GPS optimization All DOP GPS optimization

1993-01-26

1994-06-21

Hellner, Mark

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

G01S 1300

Patent

active

053231635

ABSTRACT:
The all DOP GPS optimization utilizes special dilution of precision (DOP) minimization measures to select the constellation of four (and fewer, with constraints) GPS satellites to form the navigation solution with optimized accuracy in the desired orthogonal component(s) of position and velocity, and the desired component of time. Furthermore, the all DOP GPS optimization utilizes multiple navigation solutions of the top ranked satellite constellations of four (and fewer) GPS satellites selected by special DOP(s) (and standard DOP(s)) minimization(s), by weighting these multiple navigation solution estimates for a component(s) of interest with the inverse of the associated DOP, and then solving for the least squares solution of these multiple navigation solution estimates. Implementation of all DOP GPS optimization is accomplished with addition of microprocessor(s), RAM memory, and ROM memory to the general processing section of a GPS receiver to implement the special DOP (and standard DOP) algorithms, the multiple parallel running navigation solutions, and the least squares solution of the the multiple navigation solution estimates by increased processing thruput, and added data, constants, and instructions storage.

REFERENCES:
patent: 5144318 (1992-09-01), Kishi

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