- Patent Title: Process and system to determine temporal changes in retransmission and propagation of signals used to measure distances, syncronize actuators and georeference applications
-
Application No.: US14110863Application Date: 2012-04-17
-
Publication No.: US09726759B2Publication Date: 2017-08-08
- Inventor: Pierre Kaufmann , Pedro Levit Kaufmann
- Applicant: Pierre Kaufmann , Pedro Levit Kaufmann
- Applicant Address: BR Sao Paulo-Sp
- Assignee: Instituto Presbiteriano Mackenzie
- Current Assignee: Instituto Presbiteriano Mackenzie
- Current Assignee Address: BR Sao Paulo-Sp
- Agency: Dinsmore & Shohl LLP
- Priority: BR1102017 20110418; BR102012006120 20120319
- International Application: PCT/BR2012/000113 WO 20120417
- International Announcement: WO2012/142688 WO 20121026
- Main IPC: G01S19/31
- IPC: G01S19/31 ; G01S13/87 ; G01S5/02 ; G01S5/06 ; G01S5/04 ; G01S1/04

Abstract:
The proposed solution includes the use of four reference bases on the ground at known positions, with a coded time signal transmitted by one of them which is retransmitted by the repeater station and received by each of the reference bases. Using two distinct sets of three reference bases it is possible to calculate the differences between two positions for the repeater station, assigning to the later changes in time, phase or frequency as well as temporal changes due to the signal propagation in the medium, for the respective elevation angles found for the repeater. It can be then identified which values attributed to the temporal changes produces a minimum difference between the two respective positions of the repeater station. The identified temporal change can be used for the correct determination of the repeater station and its use on pertinent applications.
Public/Granted literature
Information query