The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 1997
Filed:
Jul. 25, 1995
Victor H Hasson, Winchester, MA (US);
Textron Systems Corporation, Wilmington, MA (US);
Abstract
A system and method of passive detection of a luminous target employs a prior knowledge and a present measurement of its electromagnetic spectrum during a target acquisition procedure and, subsequently, during analysis of the spectrum to determine the presence of Doppler shift and broadening of lines of the spectrum. The prior known reference spectrum is adjusted for the Doppler shift so as to enable identification of the corresponding spectral lines of the received target spectrum. A history of the spectral data enables an identification of the type of target, as in the case of a rocket, and a determination of characteristics of a flight of the rocket.