JPS55135765A - Loran c receiver - Google Patents

Loran c receiver

Info

Publication number
JPS55135765A
JPS55135765A JP4358979A JP4358979A JPS55135765A JP S55135765 A JPS55135765 A JP S55135765A JP 4358979 A JP4358979 A JP 4358979A JP 4358979 A JP4358979 A JP 4358979A JP S55135765 A JPS55135765 A JP S55135765A
Authority
JP
Japan
Prior art keywords
circuit
signal
loran
frequency
fed
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
JP4358979A
Other languages
Japanese (ja)
Inventor
Eiichi Sato
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP4358979A priority Critical patent/JPS55135765A/en
Publication of JPS55135765A publication Critical patent/JPS55135765A/en
Pending 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)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

PURPOSE:To easily obtain the desired selectivity, by processing the loran C signal with the local oscillation signal of the same frequency by using two frequency mixing circuits. CONSTITUTION:The loran C signal received on the antenna 1 is fed to the first frequency mixing circuit 3 via the high frequency amplifying circuit 2. The output on the mixing circuit 3 is fed to the second frequency mixing circuit 6 via the intermediate frequency amplifying circuit 4. The local oscillation signal is fed to the first and second frequency mixing circuits 3 and 6 from the same local oscillation circuit 5. Loran C signal is obtained from the output signal of the second frequency mixing circuit 6 via the filter circuit 7.
JP4358979A 1979-04-12 1979-04-12 Loran c receiver Pending JPS55135765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4358979A JPS55135765A (en) 1979-04-12 1979-04-12 Loran c receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4358979A JPS55135765A (en) 1979-04-12 1979-04-12 Loran c receiver

Publications (1)

Publication Number Publication Date
JPS55135765A true JPS55135765A (en) 1980-10-22

Family

ID=12667968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4358979A Pending JPS55135765A (en) 1979-04-12 1979-04-12 Loran c receiver

Country Status (1)

Country Link
JP (1) JPS55135765A (en)

Similar Documents

Publication Publication Date Title
JPS51140420A (en) Self-oscillation mixer circuit
JPS5642437A (en) Radio receiver
JPS55135765A (en) Loran c receiver
GB1309339A (en) Television receiver
JPS56103514A (en) Filter circuit
JPS5318912A (en) Signal reception circuit of television receiver
JPS52102626A (en) Tv receiver
JPS5547740A (en) Fm receiver
JPS5242313A (en) Frequency convertor
JPS5413714A (en) Multi-frequency signal reception system
JPS56160144A (en) Fm and am receiver ic
JPS5346213A (en) Radio receiver
JPS5286710A (en) Am-fm radio receiver
JPS5511630A (en) Radio receiver
JPS545318A (en) Rejection system of interferring distortion caused in demodulation signal due to interference between fm signals
JPS55133151A (en) Mobile radio callout reception system
JPS53108706A (en) Ssb receiver
GB1114204A (en) Improvements in or relating to tuning arrangements
JPS5235561A (en) Resonance charcteristic measurement of resonance circuit of superheter odyne receiver
JPS56160118A (en) Afc and agc circuit in common
JPS5535573A (en) Tracking correction device for broadcast receiver
JPS55140320A (en) Combination tuner
JPS5327311A (en) Receiver
JPS5320714A (en) Radio receiver
JPS5537049A (en) Automatic selecting trigger circuit