Automated differential correction processing of field data in a

Details Automated differential correction processing of field data in a Automated differential correction processing of field data in a

1998-04-14

2000-11-07

Blum, Theodore M.

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

Directive

Including a satellite

701215, H04B 7185, G01S 502

Patent

active

061443352

ABSTRACT:
A system and method for automated differential correction processing of field data in a global positioning system (GPS). In one embodiment, the present invention retrieves GPS field data collected by one or more GPS receivers from a storage device, and then automatically selects the most appropriate differential correction scheme to generate a solution without user intervention. More specifically, the present invention executes a code-based correction scheme to generate a code-based solution for the field data. Next, the present invention examines the field data to determine whether a carrier phase correction is applicable. If the field data supports carrier phase correction, the present invention generates a carrier phase solution, compares it with the code-based solution, and returns the more accurate of the two solutions as the final result. If the field data does not support a carrier phase correction, the present invention returns the code-based solution as the final result. Thus, the present invention provides a system and method for post-processing of GPS field data which does not require a user to know and understand the contents of the field data, to deal with multiple user interfaces, or to read and interpret different results generated by various processing schemes. In other words, the present invention provides a single software package for post-processing of GPS field data without extensive user involvement. As such, the present invention greatly reduces the complexity of GPS field data post-processing and enhances the usability of GPS equipment.

REFERENCES:
patent: 5477458 (1995-12-01), Loomis
patent: 5577122 (1996-11-01), Schipper et al.
patent: 5899957 (1999-05-01), Loomis

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