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:
May. 12, 1998
Filed:
May. 10, 1984
Gunter Wichmann, Leiman, DE;
Eltro GmbH, Heidelberg, DE;
Abstract
The distance sensor for projectile fuzes, according to the invention, employs a range finder (6', 17, 25, 27) operating on the principle of pulse propagation time. The signal (18) is radiated by an antenna (4, 5') and the portion (18') reflected by the target is also received thereby. From a pulse (17') derived from the transmitter pulse and delayed in time by a definite amount in the delay member (19), one obtains the receiver sampling pulse (20). This pulse is used to sample the portion (18') and the resulting low-frequency representation of the receiver pulse is passed through a low-frequency amplifier (21) and a band-pass filter (44). If the frequency components of the transmitter pulse (18) are made as low as possible and the signal portions (18') reflected at the target are received only from a narrowly limited range of distances, then this method makes it possible to distinguish metal targets from non-metal targets as well as to distinguish targets of a given size from smaller targets with the aid of a simple amplitude threshold device (FIG. 1).