AU500769B2 - Process of & apparatus for providing filter discrimination between received direct impulses and delayed pulse navigation - Google Patents

Process of & apparatus for providing filter discrimination between received direct impulses and delayed pulse navigation

Info

Publication number
AU500769B2
AU500769B2 AU80938/75A AU8093875A AU500769B2 AU 500769 B2 AU500769 B2 AU 500769B2 AU 80938/75 A AU80938/75 A AU 80938/75A AU 8093875 A AU8093875 A AU 8093875A AU 500769 B2 AU500769 B2 AU 500769B2
Authority
AU
Australia
Prior art keywords
delayed pulse
received direct
providing filter
direct impulses
filter discrimination
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
AU80938/75A
Other versions
AU8093875A (en
Inventor
J. M. Brown H. L Currie
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.)
INTERNATIONAL NAVIGATION CORP
Original Assignee
INTERNATIONAL NAVIGATION 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
Priority to DE19752518611 priority Critical patent/DE2518611C2/en
Application filed by INTERNATIONAL NAVIGATION CORP filed Critical INTERNATIONAL NAVIGATION CORP
Priority to AU80938/75A priority patent/AU500769B2/en
Publication of AU8093875A publication Critical patent/AU8093875A/en
Application granted granted Critical
Publication of AU500769B2 publication Critical patent/AU500769B2/en
Expired legal-status Critical Current

Links

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
    • G01S1/08—Systems for determining direction or position line
    • G01S1/20—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems
    • G01S1/24—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems the synchronised signals being pulses or equivalent modulations on carrier waves and the transit times being compared by measuring the difference in arrival time of a significant part of the modulations, e.g. LORAN systems
    • G01S1/245—Details of receivers cooperating therewith, e.g. determining positive zero crossing of third cycle in LORAN-C

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Noise Elimination (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
AU80938/75A 1975-04-24 1975-05-08 Process of & apparatus for providing filter discrimination between received direct impulses and delayed pulse navigation Expired AU500769B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19752518611 DE2518611C2 (en) 1975-04-24 1975-04-24 Filter for Loran-C signal pulses
AU80938/75A AU500769B2 (en) 1975-04-24 1975-05-08 Process of & apparatus for providing filter discrimination between received direct impulses and delayed pulse navigation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19752518611 DE2518611C2 (en) 1975-04-24 1975-04-24 Filter for Loran-C signal pulses
AU80938/75A AU500769B2 (en) 1975-04-24 1975-05-08 Process of & apparatus for providing filter discrimination between received direct impulses and delayed pulse navigation

Publications (2)

Publication Number Publication Date
AU8093875A AU8093875A (en) 1976-11-11
AU500769B2 true AU500769B2 (en) 1979-05-31

Family

ID=25639626

Family Applications (1)

Application Number Title Priority Date Filing Date
AU80938/75A Expired AU500769B2 (en) 1975-04-24 1975-05-08 Process of & apparatus for providing filter discrimination between received direct impulses and delayed pulse navigation

Country Status (2)

Country Link
AU (1) AU500769B2 (en)
DE (1) DE2518611C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3547412B2 (en) * 2001-07-24 2004-07-28 株式会社日立製作所 Wireless terminal device and positioning system

Also Published As

Publication number Publication date
AU8093875A (en) 1976-11-11
DE2518611C2 (en) 1982-09-09
DE2518611A1 (en) 1976-10-28

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