JPS561357A - Measurement of signal level - Google Patents

Measurement of signal level

Info

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
Application number
JP7661079A
Other languages
Japanese (ja)
Inventor
Shunji Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Radio Co Ltd
Original Assignee
Japan Radio Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Japan Radio Co Ltd filed Critical Japan Radio Co Ltd
Priority to JP7661079A priority Critical patent/JPS561357A/en
Publication of JPS561357A publication Critical patent/JPS561357A/en
Pending legal-status Critical Current

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
JP7661079A 1979-06-18 1979-06-18 Measurement of signal level Pending JPS561357A (en)

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)

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