초록 ▼

GPS position information is collected and stored in a computer system. The GPS position information includes time-stamps that indicates when the GPS position information was collected. The computer system uses the time stamps to generate an error correction file name for an error correction file tha

GPS position information is collected and stored in a computer system. The GPS position information includes time-stamps that indicates when the GPS position information was collected. The computer system uses the time stamps to generate an error correction file name for an error correction file that can be used to correct the GPS position information. Using the generated error correction file name, the computer system connects to a file server that stores differential GPS error correction files and copies the needed differential GPS error correction file. The computer system connects to the DGPS file server using the File Transfer Protocol of the global Internet. The computer system then corrects the GPS position information in the computer system using the retrieved DGPS error correction file.

대표청구항 ▼

[ What is claimed is:] [1.] A computer implemented method of correcting GPS position information, said method comprising:storing GPS position information in a computer system, said GPS position information having at least one time-stamp that indicates when said GPS position information was collected

[ What is claimed is:] [1.] A computer implemented method of correcting GPS position information, said method comprising:storing GPS position information in a computer system, said GPS position information having at least one time-stamp that indicates when said GPS position information was collected;opening a connection from said computer system to a base station coordination computer;requesting said base station coordination computer for an address of a file server that contains DGPS error correction files from a base station closest to a position indicated by said GPS position information;generating at least one DGPS error correction file name based upon said time-stamp;connecting said computer system to a file server associated with said nearest DGPS base station;copying a DGPS error correction file on said file server having said DGPS error correction file name into said computer system; andcorrecting said GPS position information in said computer system using said DGPS error correction file.