NAVIGATION SATELLITE SIGNAL REPEATER AND NAVIGATION SATELLITE SIGNAL REPEATING METHOD

• US 20120119950A1
• Filed: 11/14/2011
• Published: 05/17/2012
• Est. Priority Date: 11/11/2010
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: KIM, Daeho
• Application Number:
  US13/295,448
• Publication Number:
  US 20120119950A1
• Time in Patent Office: Days
• US Class Current: 342/357.48
• CPC Class Codes: G01S 19/11 wherein the cooperating elements are pseudolites or satellite radio beacon positioning system signal repeaters

Abstract

A navigation satellite signal repeater and a navigation satellite signal repeating method are provided. The navigation satellite signal repeater includes an outdoor navigation satellite receiver and a plurality of navigation satellite signal generators. The outdoor navigation satellite receiver is configured to receive a navigation satellite signal from a navigation satellite and extract satellite information from the received navigation satellite signal. The navigation satellite signal generators are disposed in a building and are configured to receive the extracted satellite information through a transmission line, generate new satellite information in consideration of a time delay of the transmission line, and transmit a new navigation satellite signal corresponding to the new satellite information. The navigation satellite signal repeater repeats a new navigation satellite signal by reflecting a time delay of satellite information, thus enabling accurate location detection even in a poor environment (e.g., an indoor environment) where a navigation satellite signal is not received.

Claims

1. A navigation satellite signal repeater comprising:

an outdoor navigation satellite receiver configured to receive a navigation satellite signal from a navigation satellite and extract satellite information from the received navigation satellite signal; and

a plurality of navigation satellite signal generators disposed in a building and configured to receive the extracted satellite information through a transmission line, generate new satellite information in consideration of a time delay of the transmission line, and transmit a new navigation satellite signal corresponding to the generated new satellite information.

2. The navigation satellite signal repeater of claim 1, wherein the satellite information includes navigation data, satellite ID (identification), and time information.

3. The navigation satellite signal repeater of claim 2, wherein each of the navigation satellite signal generators comprises:

a navigation satellite data generating unit configured to receive the extracted satellite information through the transmission line and generate new navigation data having time delay information of the transmission line;

a navigation satellite spread signal generating unit configured to convert the generated new navigation data into an new navigation satellite signal; and

a navigation satellite signal transmitting unit configured to transmit the new navigation satellite signal through a TX antenna.

4. The navigation satellite signal repeater of claim 3, wherein the TX antenna comprises three antennas.

5. The navigation satellite signal repeater of claim 4, wherein the three antennas are disposed at angular intervals of 120°

.

6. The navigation satellite signal repeater of claim 3, wherein the TX antenna comprises four antennas.

7. The navigation satellite signal repeater of claim 6, wherein the four antennas are disposed at angular intervals of 90°

.

8. The navigation satellite signal repeater of claim 3, wherein the TX antenna comprises at least three antennas configured to transmit the navigation satellite signal corresponding to at least three navigation satellites.

9. The navigation satellite signal repeater of claim 3, further comprising a TX power controlling unit configured to generate a TX power control signal for controlling the TX power of the navigation satellite signal transmitting unit.

10. A navigation satellite signal repeating method comprising:

receiving a navigation satellite signal from an outdoor navigation satellite receiver;

extracting satellite information from the received navigation satellite signal by the outdoor navigation satellite receiver;

transmitting the extracted satellite information through a plurality of transmission lines to a plurality of navigation satellite signal generators, and generating new navigation satellite information by each of the navigation satellite signal generators by reflecting a time delay of the corresponding transmission line; and

transmitting a new navigation satellite signal corresponding to the new navigation satellite information by each of the navigation satellite signal generators.

11. The navigation satellite signal repeating method of claim 10, wherein the navigation satellite information reflecting the time delay is navigation data.

12. The navigation satellite signal repeating method of claim 10, wherein the transmitting of the new navigation satellite signal comprises transmitting the new navigation satellite signal through an antenna corresponding to satellite ID (identification) included in the satellite information.