GB1406086A - Digital filters - Google Patents

Digital filters

Info

Publication number
GB1406086A
GB1406086A GB4330872A GB4330872A GB1406086A GB 1406086 A GB1406086 A GB 1406086A GB 4330872 A GB4330872 A GB 4330872A GB 4330872 A GB4330872 A GB 4330872A GB 1406086 A GB1406086 A GB 1406086A
Authority
GB
United Kingdom
Prior art keywords
digital filters
sept
input
output
siemens
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
GB4330872A
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of GB1406086A publication Critical patent/GB1406086A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/04—Recursive filters
    • H03H17/0416—Recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H03H17/0427—Recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
    • H03H17/0438—Recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer
    • H03H17/045—Recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer where the output-delivery frequency is lower than the input sampling frequency, i.e. decimation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/522—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves
    • G01S13/524—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
    • G01S13/526—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi performing filtering on the whole spectrum without loss of range information, e.g. using delay line cancellers or comb filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Networks Using Active Elements (AREA)

Abstract

1406086 Active filters SIEMENS AG 19 Sept 1972 [21 Sept 1971] 43308/72 Heading H3U A digital filter comprises a first part F1 and a second part F2 which receives at its input an mth part of the output from the first part, and which is clocked, e.g. via frequency divider FT, at 1/m of the clock rate of the first. The output from the first may be coupled to the input of the second via a circuit M1 which averages m outputs.
GB4330872A 1971-09-21 1972-09-19 Digital filters Expired GB1406086A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712147090 DE2147090C3 (en) 1971-09-21 1971-09-21 Use of a digital low-pass filter with at least two sub-filters

Publications (1)

Publication Number Publication Date
GB1406086A true GB1406086A (en) 1975-09-10

Family

ID=5820161

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4330872A Expired GB1406086A (en) 1971-09-21 1972-09-19 Digital filters

Country Status (5)

Country Link
DE (1) DE2147090C3 (en)
FR (1) FR2154138A5 (en)
GB (1) GB1406086A (en)
IT (1) IT967598B (en)
NL (1) NL154374B (en)

Also Published As

Publication number Publication date
NL7208766A (en) 1973-03-23
FR2154138A5 (en) 1973-05-04
DE2147090A1 (en) 1973-03-29
DE2147090B2 (en) 1979-03-15
NL154374B (en) 1977-08-15
IT967598B (en) 1974-03-11
DE2147090C3 (en) 1979-10-31

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Legal Events

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