JPS5791455A - Frequency analyzer - Google Patents

Frequency analyzer

Info

Publication number
JPS5791455A
JPS5791455A JP16890580A JP16890580A JPS5791455A JP S5791455 A JPS5791455 A JP S5791455A JP 16890580 A JP16890580 A JP 16890580A JP 16890580 A JP16890580 A JP 16890580A JP S5791455 A JPS5791455 A JP S5791455A
Authority
JP
Japan
Prior art keywords
signals
frequency
threshold
input signals
temp
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
JP16890580A
Other languages
Japanese (ja)
Inventor
Masahiro Murakami
Akira Okamoto
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP16890580A priority Critical patent/JPS5791455A/en
Publication of JPS5791455A publication Critical patent/JPS5791455A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/16—Spectrum analysis; Fourier analysis

Abstract

PURPOSE:To perform frequency analysis of radar input signals or the like stably without the influence of temp. change by setting the threshold of a threshold detector on the basis of the detection leve of a pilot signal at each time. CONSTITUTION:The input signals converted to the common intermediate frequency signals outputted from the down converters 5a-, etc. of a frequency conversion circuit 30 are applied to the 2nd switches 12a- outputting the pilot signals selected by the 1st switch 11 or these signals. After these signals are controlled of oscillations, they are split by PBFs 7a-of a narrow band and are detected with a threshold detector 8a, thence they are subjected to frequency decision by a discrimination circuit 9. On the other hand, the pilot signals through the switches 12a- are detected with the detectors 8a- and the threshold levels of the detectors 8a are set at each time on the bases of the detection level. Hence, there is no effect of temp. change, and the frequency analysis of the radar input signals, etc. is accomplished stably.
JP16890580A 1980-11-27 1980-11-27 Frequency analyzer Pending JPS5791455A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16890580A JPS5791455A (en) 1980-11-27 1980-11-27 Frequency analyzer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16890580A JPS5791455A (en) 1980-11-27 1980-11-27 Frequency analyzer

Publications (1)

Publication Number Publication Date
JPS5791455A true JPS5791455A (en) 1982-06-07

Family

ID=15876729

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16890580A Pending JPS5791455A (en) 1980-11-27 1980-11-27 Frequency analyzer

Country Status (1)

Country Link
JP (1) JPS5791455A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7428464B2 (en) 2003-07-02 2008-09-23 Tektronix, Inc. Wideband signal analyzer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7428464B2 (en) 2003-07-02 2008-09-23 Tektronix, Inc. Wideband signal analyzer

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