Patent · US Expired

Method, apparatus, and system for signal prediction

US6775802B2 · kind B2 · utility

157Cited by
6References
38Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJul 13, 2001
Grant dateAug 10, 2004
Priority date—
Expiry dateAug 22, 2022

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01S19/246
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

An apparatus, method, and system for predicting subframes of Global Positioning System (GPS) signals. The apparatus include a processor capable of determining whether a subframe is an almanac subframe, setting a timehead and adding it to a time-of-week (TOW), setting a telemetry (TLM) message based on value of the TOW, generating a Cyclic Redundancy Code (CRC) for a predicted subframe, and a memory for storing the predicted subframe. The memory may vary in size based on the number of predicted subframes. The processor is further capable of determining whether the value of the TOW is less than the number of seconds in a week, calculating a position of the predicted subframe in the memory, and setting a valid flag.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.