Title:
MOVING OBJECT POSITION MEASURING APPARATUS AND CAR NAVIGATION APPARATUS
Document Type and Number:
Japanese Patent JP3514786
Kind Code:
B2
Abstract:
PURPOSE: To achieve higher accuracy of a running locus of a moving object to be displayed by correcting and displaying a position data of the moving object from a current position detecting means based on a speed data and a bearing data to reduce variations in the position data.
CONSTITUTION: A GPS receiver 2 detects the current position of an own car, for example, in terms of latitude, longitude and altitude with a GPS (geometrical position measuring system) while detecting the ongoing direction, running speed and the like of the own car. GPS radio waves which are transmitted wireless onto the ground, for example. from artificial satellites 9a, 9b, 9c and 9d are received separately through a GPS antenna 2a to measure the current position of the own car three-dimensionally by the theory of triangulation from a difference in arrival time of the radio waves. Then, a map drawing processing section 8 reads the present location corrected of the own car from a position correcting section 10 and a map containing the position of the own car and related guide information and the like are read out from a CD-ROM3 through a CD-ROM driver 4 based on the position of the own car and superimposed on the map to be drawn on a display 6.
Inventors:
Yamaguchi, Takashi
Application Number:
JP12441193A
Publication Date:
March 31, 2004
Filing Date:
May 26, 1993
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
G01C21/00; G01C23/00; G01S19/23; G09B29/10; (IPC1-7): G01C21/00; G01C23/00; G01S5/14; G09B29/10
Attorney, Agent or Firm:
波多野 久 （外１名）