| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an aircraft position measuring system which enhances the measurement accuracy of an aircraft position. <P>SOLUTION: Each reception station 51<SB POS="POST">i</SB>receives a squitter signal transmitted from an aircraft. Flight location information (latitude information, longitude information and geometric altitude information) of an aircraft is determined by a target processing station 60 based on difference information of reception time of squitter signals at each reception station 51<SB POS="POST">i</SB>and installation position information of each reception station 51<SB POS="POST">i</SB>. In this case, a time information tm transmitted from satellites constituting a satellite reinforcement system is received by time information reception means (GPS reinforcement system receiver 52) in each reception station 51<SB POS="POST">i</SB>. Acquired reception time of the squitter signal at the reception station 51<SB POS="POST">i</SB>by time synchronization means (a timing part 53 and a decoding part 55) is synchronized with the time information tm which has been received by the GPS reinforcement system receiver 52. <P>COPYRIGHT: (C)2012,JPO&INPIT |
