Radar type fuzes
US4158842A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1965 |
| Grant date | Jun 19, 1979 |
| Priority date | — |
| Expiry date | Mar 31, 1985 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/36
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
1. In a target-approaching doppler radar of the type including means for generating radio frequency signals and supplying local oscillations, means for generating random noise bursts, modulator means, means for mixing said local oscillations with echo signals, a doppler amplifying channel, and means for controlling the sensitivity of said channel, the improvement which comprises, in combination: PA1 A video delay network interposed between the noise burst signal generating means and the modulator means for effectively forming each burst into a sequence of bursts of like character and the successive bursts into successive sequences, thereby providing several opportunities for correlation at radio frequencies; PA1 And means for taking advantage of a later opportunity for correlation if at any point in the approach to the target barrage-type false jamming signals are present, the last-mentioned means comprising: PA2 Filter means in the doppler signal amplifying channel for dividing the doppler signal spectrum down into a plurality of segments large in number with respect to the number of adjacent segments into which a true doppler signal falls; PA2 And signal analyzer means having a l…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.