Title:
GPS RECEIVER
Document Type and Number:
Japanese Patent JPH0618643
Kind Code:
A
Abstract:
PURPOSE: To enable the trace of a current position to be smooth.
CONSTITUTION: Modification of combination of satellites is limited by a selected positioning satellite check part 5. The selected positioning satellite check part 5 checks to see if a DOP value according to the combination of satellites used for positioning calculation does not exceeds the marginal value which is set by a DOP marginal value setting part 2 and any satellite belonging to the combination is ready to receive signal. When the conditions are established, control is shifted to a positioning calculation part 4 without going through a satellite selection part 3 and the current combination of satellites is maintained.
Inventors:
FUJIWARA YUKARI
Application Number:
JP17247192A
Publication Date:
January 28, 1994
Filing Date:
June 30, 1992
Export Citation:
Assignee:
JAPAN RADIO CO LTD
International Classes:
G01S19/28; G01S19/42; (IPC1-7): G01S5/14
Attorney, Agent or Firm:
Kenji Yoshida (2 outside)
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