Classifications

• • 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
  • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
  • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
  • G01S1/04—Details
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
  • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
  • G01R29/02—Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time or duration
• • 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
  • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
  • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
  • G01S13/78—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted discriminating between different kinds of targets, e.g. IFF-radar, i.e. identification of friend or foe
  • G01S13/781—Secondary Surveillance Radar [SSR] in general
  • G01S13/784—Coders or decoders therefor; Degarbling systems; Defruiting systems
• • G—PHYSICS
  • G04—HOROLOGY
  • G04F—TIME-INTERVAL MEASURING
  • G04F10/00—Apparatus for measuring unknown time intervals by electric means
  • G04F10/04—Apparatus for measuring unknown time intervals by electric means by counting pulses or half-cycles of an ac

Landscapes

• Engineering & Computer Science (AREA)
• Remote Sensing (AREA)
• Radar, Positioning & Navigation (AREA)
• General Physics & Mathematics (AREA)
• Physics & Mathematics (AREA)
• Computer Networks & Wireless Communication (AREA)
• Power Engineering (AREA)
• Dc Digital Transmission (AREA)
• Measurement Of Unknown Time Intervals (AREA)
• Radar Systems Or Details Thereof (AREA)
• Manipulation Of Pulses (AREA)
• Measuring Frequencies, Analyzing Spectra (AREA)
• Transmission And Conversion Of Sensor Element Output (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=24024630

Family Applications (1)

Country Status (6)

Families Citing this family (14)

Family Cites Families (8)

• 1974
  • 1974-09-25 US US05/508,926 patent/US3981440A/en not_active Expired - Lifetime
• 1975
  • 1975-09-19 AU AU84994/75A patent/AU8499475A/en not_active Expired
  • 1975-09-20 DE DE19752542061 patent/DE2542061A1/de active Pending
  • 1975-09-23 IT IT27519/75A patent/IT1042766B/it active
  • 1975-09-23 JP JP50114381A patent/JPS5160571A/ja active Pending
  • 1975-09-25 FR FR7529373A patent/FR2286386A1/fr active Granted

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