Method and apparatus for sampling broad band spectra in fuel quantity measurement systems
US4542336A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 11, 1983 |
| Grant date | Sep 17, 1985 |
| Priority date | — |
| Expiry date | May 11, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R23/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus is proposed for sampling at a low rate a broad band sparse spectrum without aliasing to a specified band in which a lowest sampling frequency is found by selecting that signal level from the spectrum which is considered negligible and finding the bandwidths at which the information bands about the carrier frequency multiple reaches this level, then arranging forbidden or unaccepted values of the remainder r of the quotient of the carrier frequency divided by the sampling frequency into a series in order of magnitude, further selecting those sampling frequencies at which adjacent forbidden ranges of the remainder become contiguous, selecting the least value thereof in order to ascertain the corresponding permissible value of the remainder r, and finally determining the corresponding least sampling frequency and the maximum integer value multiple of a clock count, thus establishing the maximum sampling interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.