Patent · US Expired

Target track crossing prediction/detection

US6819230B2 · kind B2 · utility

0Cited by
5References
18Claims
0Family size

Assignee

Inventor

Key dates

Filing dateAug 8, 2002
Grant dateNov 16, 2004
Priority date—
Expiry dateNov 17, 2022

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01S13/726
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A method and system are provided for predicting and detecting the crossing of two target tracks in a bearing versus time coordinate frame. The method/system use a series of periodic bearing measurements of the two target tracks to determine a bearing rate and a projected intercept with a bearing axis of the bearing versus time coordinate frame. A crossing time tc for the two target tracks is determined using the tracks' bearing rates and projected intercepts. A prediction that the two target tracks will cross results if a first inequality is satisfied while a detection that the two target tracks have crossed results if a second inequality is satisfied.

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