Patent · US Expired

Method and system of determining altitude of flying object

US6640165B1 · kind B1 · utility

8Cited by
12References
15Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 26, 2002
Grant dateOct 28, 2003
Priority date—
Expiry dateNov 26, 2022

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01C5/005
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A method of determining an altitude of a flying object. A Blanchard altitude of a flying object is computed. A non-Blanchard reference altitude and a trajectory of the flying object are measured and input to a Kalman filter. In the Kalman filter, the non-Blanchard reference altitude and the trajectory are processed to derive a radius of jet stream curvature. A gradient wind correction factor is then computed as a function of the radius of jet stream curvature. The Blanchard altitude is then corrected in response to the gradient wind correction factor.

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