Radio altimeter rate linearizer
US3974365A · kind A · utility
3Cited by
3References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1975 |
| Grant date | Aug 10, 1976 |
| Priority date | — |
| Expiry date | Sep 26, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K4/066
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and means for obtaining a linear rate of change signal from an input analog signal whose magnitude exhibits a logarithmic amplitude variation over at least a portion of the range of the independent variable defining said signal. The nonlinear rate of change of the input signal is obtained by differentiation, and the resulting nonlinear rate signal is multiplied by the nonlinear function of the dependent variable defining the input signal, which function is implemented in accordance with that defined from a mathematical differentiation of the expression defining the nonlinear characteristic of the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.