JPS5620342A - Acquistition system - Google Patents

Acquistition system

Info

Publication number
JPS5620342A
JPS5620342A JP9608479A JP9608479A JPS5620342A JP S5620342 A JPS5620342 A JP S5620342A JP 9608479 A JP9608479 A JP 9608479A JP 9608479 A JP9608479 A JP 9608479A JP S5620342 A JPS5620342 A JP S5620342A
Authority
JP
Japan
Prior art keywords
station
distance
satellite
earth
stations
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
JP9608479A
Other languages
Japanese (ja)
Inventor
Seiji Enomoto
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP9608479A priority Critical patent/JPS5620342A/en
Publication of JPS5620342A publication Critical patent/JPS5620342A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/212—Time-division multiple access [TDMA]

Abstract

PURPOSE:To prevent disturbance happening to a communication circuit in distance measurement by performing the aquisition of the 2nd stations by use of the measured value of the 1st station on the earth. CONSTITUTION:The 1st earth station among earth stations that constitute a time- division multiplex multiple-access satellite communication system measure a distance from the station to a satellite and on the basis of the distance of the 1st station, the satellite is automatically tracked to find tracking angle data. This distance data and/or tracking angle data are transmitted to the 2nd earth station and the 2nd station calculates the distances from the 1st station and 2nd station to the satellite by use of latitudes, longitudes and elevations of the 1st and 2nd stations to be measured, the target stationary longitude of the satellite, and tracking angle data of the 1st station. Differences between those values are added as correction values to distance data measured by the 1st station and the 2nd station predicts the distance from the 2nd station to the satellite; and the distance is converted into propagation time to determine the signal transmission time of the 2nd station, thereby preventing disturbance happening to the communication circuit in distance measurement.
JP9608479A 1979-07-30 1979-07-30 Acquistition system Pending JPS5620342A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9608479A JPS5620342A (en) 1979-07-30 1979-07-30 Acquistition system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9608479A JPS5620342A (en) 1979-07-30 1979-07-30 Acquistition system

Publications (1)

Publication Number Publication Date
JPS5620342A true JPS5620342A (en) 1981-02-25

Family

ID=14155525

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9608479A Pending JPS5620342A (en) 1979-07-30 1979-07-30 Acquistition system

Country Status (1)

Country Link
JP (1) JPS5620342A (en)

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