JPS561357A - Measurement of signal level - Google Patents
Measurement of signal levelInfo
- Publication number
- JPS561357A JPS561357A JP7661079A JP7661079A JPS561357A JP S561357 A JPS561357 A JP S561357A JP 7661079 A JP7661079 A JP 7661079A JP 7661079 A JP7661079 A JP 7661079A JP S561357 A JPS561357 A JP S561357A
- Authority
- JP
- Japan
- Prior art keywords
- input signal
- pulse train
- signal
- circuit
- leveling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To simplify sampling and to omit Fourier conversion by a method wherein the amplitude of an input signal with the same frequency as that of the standard signal is obtained from the specified expression after the input signal has been sampled at the standard phase point in the standard signal.
CONSTITUTION: An input signal is given to an input signal terminal 1 and sent to sampling circuits 2, 3, and it produces in a pulse generating circuit 4 a pulse train Pa in same plase to the input signal and a pulse train Pb in lagging phase each with the same frequency as that of the input signal. The input signal is sampled by the pulse train Pa in a circuit 2 and a value obtained a1 is sent to a leveling circuit 5, and a value b1 is sent to a leveling circuit 6 by the pulse train pb after the signal has been sampled in a circuit 3. In the leveling circuits 5, 6, the mean value of the samples from which noises have been removed by leveling a1 and b1 over a long period of time is obtained. If a phase lag of the pulse train pb against the pulse train pa is α, then the amplitude E of the signal component of the input signal can be obtained from the following expression.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7661079A JPS561357A (en) | 1979-06-18 | 1979-06-18 | Measurement of signal level |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7661079A JPS561357A (en) | 1979-06-18 | 1979-06-18 | Measurement of signal level |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS561357A true JPS561357A (en) | 1981-01-09 |
Family
ID=13610100
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7661079A Pending JPS561357A (en) | 1979-06-18 | 1979-06-18 | Measurement of signal level |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS561357A (en) |
-
1979
- 1979-06-18 JP JP7661079A patent/JPS561357A/en active Pending
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