Air target fuze
US4040357A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 4, 1959 |
| Grant date | Aug 9, 1977 |
| Priority date | — |
| Expiry date | Mar 4, 1979 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF42C13/045
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
1. An improved air target fuze for use on a missile, said fuze comprising combination: an oscillator, a modulator connected to frequency modulate said oscillator with a modulating waveform chosen so that the carrier frequency of said oscillator is changed from its initial value at approximately a .sup. t.sup.2/3 rate, where t represents time, until a predetermned frequency is reached, the wave then decreasing at a -t.sup.2/3 rate until the carrier frequency returns to its initial value, the above cycle then repeating periodically, a sidewise looking transmitting antenna to which the frequency modulated output of said oscillator is fed, a sidewise looking receiving antenna for receiving a reflected wave from a target, a mixer to which the received wave and a portion of the transmitted wave are fed, a narrow band amplifier having a center frequency f.sub.o to which the output of said mixer is fed, said modulating waveform further being chosen so that at the fuze-to-target cut-off distance beyond which the fuze is not to respond the difference frequency between the transmitted and received waves when the transmitted wave has a frequency corresponding to said predetermined point is sub…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.