Method of estimating the elevation of a ballistic projectile
US8106814B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2007 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | May 19, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/72
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a method enabling precise determination of the elevation of a projectile following a ballistic trajectory by use of a conventional Doppler surveillance radar. The method includes calculating first the estimate {circumflex over (Γ)}ρ of the value of the radial component Γρ of the acceleration of the projectile from the quantities {dot over (d)} and {umlaut over (d)}, respectively representing the first derivative and the second derivative with respect to time of the Doppler velocity d of the projectile, then calculating the estimate {circumflex over (V)} of the speed V of the projectile from d, {dot over (d)} and {circumflex over (Γ)}ρ, and finally calculating the estimate Ê of its angle of elevation E from d and {circumflex over (V)}. The method according to the invention may apply to the protection of sensitive areas against the firing of ballistic projectiles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.