JPS6474478A - Position measurement error correcting device for loran c navigation - Google Patents

Position measurement error correcting device for loran c navigation

Info

Publication number
JPS6474478A
JPS6474478A JP23105487A JP23105487A JPS6474478A JP S6474478 A JPS6474478 A JP S6474478A JP 23105487 A JP23105487 A JP 23105487A JP 23105487 A JP23105487 A JP 23105487A JP S6474478 A JPS6474478 A JP S6474478A
Authority
JP
Japan
Prior art keywords
latitude
longitude
loran
error
position measurement
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
JP23105487A
Other languages
Japanese (ja)
Inventor
Koichi Washizu
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.)
Japan Radio Co Ltd
Original Assignee
Japan Radio 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 Japan Radio Co Ltd filed Critical Japan Radio Co Ltd
Priority to JP23105487A priority Critical patent/JPS6474478A/en
Publication of JPS6474478A publication Critical patent/JPS6474478A/en
Pending legal-status Critical Current

Links

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  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

PURPOSE:To improve the operability of a receiver for Loran C navigation by correcting automatically position measurement errors of latitude and longitude which are calculated momentarily from Loran time differences at respective points with a position measurement error quantity. CONSTITUTION:The true values of the latitude and longitude at a known position are stored in a latitude and longitude true value storage part 1. When a Loran signal is received by an antenna 4, a Loran time is difference measurement part 5 calculates the Loran time difference and a latitude and longitude calculation part 6 finds latitude and longitude corresponding to the time difference found by the Loran time difference measurement part 5. Then the error quantities of the latitude and longitude when a tracking state is entered are calculated by a latitude and longitude error quantity calculation part 7. Those error quantities are stored in a latitude and longitude error quantity storage part 8. Then values of latitude and longitude which are calculated momentarily at respective points of time are corrected with the error quantities. The correct values are displayed on a latitude and longitude display part 2.
JP23105487A 1987-09-17 1987-09-17 Position measurement error correcting device for loran c navigation Pending JPS6474478A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23105487A JPS6474478A (en) 1987-09-17 1987-09-17 Position measurement error correcting device for loran c navigation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23105487A JPS6474478A (en) 1987-09-17 1987-09-17 Position measurement error correcting device for loran c navigation

Publications (1)

Publication Number Publication Date
JPS6474478A true JPS6474478A (en) 1989-03-20

Family

ID=16917566

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23105487A Pending JPS6474478A (en) 1987-09-17 1987-09-17 Position measurement error correcting device for loran c navigation

Country Status (1)

Country Link
JP (1) JPS6474478A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5645110A (en) * 1979-09-20 1981-04-24 Yanmar Agricult Equip Automatic steering device of transplanter
JPS62163987A (en) * 1986-01-16 1987-07-20 Hitachi Ltd positioning device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5645110A (en) * 1979-09-20 1981-04-24 Yanmar Agricult Equip Automatic steering device of transplanter
JPS62163987A (en) * 1986-01-16 1987-07-20 Hitachi Ltd positioning device

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