Patent ID: 7460064
Filing Date: 2008-12-02
Classification: G01C,G01S

Abstract:
1. A method of variable rate measurements in a device, comprising the steps of: (A) generating an intermediate signal conveying both a position of said device and a velocity of said device in response to a plurality of navigation signals received from external said device; (B) measuring both a first value of said position and a first vector of said velocity at a first time; (C) calculating an extrapolated value of said position expected at a second time based on said first value and said first vector; (D) measuring a second value of said position at said second time; (E) adjusting an interval between said second time and a third time in response to a difference between said extrapolated value and said second value; and (F) generating a position signal conveying said position and said velocity, wherein said third time occurs after said second time and said second time occurs after said first time.