Uniform discrete fourier transform filter parameter encoder
US5870436A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 1997 |
| Grant date | Feb 9, 1999 |
| Priority date | — |
| Expiry date | Jan 2, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/021
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention is embodied in a parameter encoder for identifying selected parameters of a digitally sampled incoming signal lying within a receiver bandwidth, wherein the receiver bandwidth is divided into plural contiguous frequency channels, each channel having a channel bandwidth, whereby the incoming signal is divided into plural channelized signals lying in respective ones of the plural frequency channels, the parameter encoder includes plural channel processors connected to receive respective ones of the channelized signals, each of the channel processors including Fourier transform apparatus for producing a frequency value and an amplitude value for each sample of the respective channelized signal. The parameter encoder embodying the invention further includes a channel arbitrator including comparator apparatus for comparing the amplitude value with a predetermined threshold, comparing the amplitude value with the corresponding amplitude values of adjacent ones of the channels and comparing the frequency value with corresponding frequency values of adjacent ones of the channels, and processor apparatus for sensing whether a detected signal lies in the respective channel base…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.