GB2059601B - Selective frequency measurements - Google Patents

Selective frequency measurements

Info

Publication number
GB2059601B
GB2059601B GB7933705A GB7933705A GB2059601B GB 2059601 B GB2059601 B GB 2059601B GB 7933705 A GB7933705 A GB 7933705A GB 7933705 A GB7933705 A GB 7933705A GB 2059601 B GB2059601 B GB 2059601B
Authority
GB
United Kingdom
Prior art keywords
frequency measurements
selective frequency
selective
measurements
frequency
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.)
Expired
Application number
GB7933705A
Other languages
English (en)
Other versions
GB2059601A (en
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.)
Racal Communications Equipment Ltd
Original Assignee
Racal Communications Equipment 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 Racal Communications Equipment Ltd filed Critical Racal Communications Equipment Ltd
Priority to GB7933705A priority Critical patent/GB2059601B/en
Priority to DE3035651A priority patent/DE3035651C2/de
Priority to US06/189,146 priority patent/US4373203A/en
Priority to FR8020728A priority patent/FR2466914A1/fr
Publication of GB2059601A publication Critical patent/GB2059601A/en
Application granted granted Critical
Publication of GB2059601B publication Critical patent/GB2059601B/en
Expired 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
    • G01R23/165—Spectrum analysis; Fourier analysis using filters

Landscapes

  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Noise Elimination (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Circuits Of Receivers In General (AREA)
  • Radar Systems Or Details Thereof (AREA)
GB7933705A 1979-09-28 1979-09-28 Selective frequency measurements Expired GB2059601B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB7933705A GB2059601B (en) 1979-09-28 1979-09-28 Selective frequency measurements
DE3035651A DE3035651C2 (de) 1979-09-28 1980-09-20 Verfahren und Schaltungsanordnung zum Abschätzen des Pegels eines Eingangssignals innerhalb eines vorgegebenen Durchlaßbandes
US06/189,146 US4373203A (en) 1979-09-28 1980-09-22 Circuit arrangement and method for assessing communication activity on a particular radio communication channel
FR8020728A FR2466914A1 (fr) 1979-09-28 1980-09-26 Procede et circuit d'estimation du niveau d'un signal dans une bande d'emission radio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7933705A GB2059601B (en) 1979-09-28 1979-09-28 Selective frequency measurements

Publications (2)

Publication Number Publication Date
GB2059601A GB2059601A (en) 1981-04-23
GB2059601B true GB2059601B (en) 1983-03-23

Family

ID=10508142

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7933705A Expired GB2059601B (en) 1979-09-28 1979-09-28 Selective frequency measurements

Country Status (4)

Country Link
US (1) US4373203A (enExample)
DE (1) DE3035651C2 (enExample)
FR (1) FR2466914A1 (enExample)
GB (1) GB2059601B (enExample)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688131A (en) * 1970-03-16 1972-08-29 Rca Corp Time delay device
US3795861A (en) * 1973-02-20 1974-03-05 P Lazenby Apparatus for analysing transients in a periodic sequence of signals
US3988679A (en) * 1973-05-04 1976-10-26 General Electric Company Wideband receiving system including multi-channel filter for eliminating narrowband interference
US3932818A (en) * 1974-07-18 1976-01-13 Hazeltine Corporation Spectrum notcher
US4143333A (en) * 1977-05-16 1979-03-06 David P. Misunas Impulse noise removing apparatus

Also Published As

Publication number Publication date
GB2059601A (en) 1981-04-23
US4373203A (en) 1983-02-08
FR2466914B3 (enExample) 1982-07-23
FR2466914A1 (fr) 1981-04-10
DE3035651C2 (de) 1985-01-03
DE3035651A1 (de) 1981-07-02

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee