Patent · US Active

Method and apparatus for reducing satellite position message payload by adaptive data compression techniques

US9250327B2 · kind B2 · utility

35Cited by
85References
35Claims
0Family size

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Key dates

Filing dateMar 5, 2013
Grant dateFeb 2, 2016
Priority date—
Expiry dateAug 2, 2033

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH03M7/30
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

An adaptive method by which Differential GNSS corrections may be compressed. Each measurement datum to be transmitted to a rover for satellite navigation purposes is decomposed into two parts, namely, an anchor value and a delta value, and in some instances an added third part termed a nonce value is used. Encoding parameters such as the number of bits assigned to each part of the measurement datum, the order of the models used to convey positional data, and scaling constants in the models, are adjusted adaptively based on changing data and/or transmission medium characteristics. Adaptive compression also allows for anomalous conditions such as out-of-range data values to be handled gracefully.

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