GPS signal repeater and GPS receiver of stationary orbit satellite, and method for positioning stationary orbit satellite using the same

• US 7,456,783 B2
• Filed: 11/16/2006
• Issued: 11/25/2008
• Est. Priority Date: 11/16/2005
• Status: Expired due to Fees

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Kim, Jae-Hoon, Joo, In-One, Lee, Jeom-Hun
• Primary Examiner(s): Tarcza; Thomas H.
• Assistant Examiner(s): LIU, HARRY K
• Application Number:
  US11/600,963
• Publication Number:
  US 20070159382A1
• Time in Patent Office: 740 Days
• Field of Search: 34235701-35717
• 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
• CPC Class Codes: G01S 19/14 specially adapted for specific applications

Abstract

Provided is a Global Positioning System (GPS) signal repeater and a GPS receiver of a stationary orbit satellite, and a method for positioning a stationary orbit satellite using the same. The GPS signal repeater includes: a GPS receiver for receiving an L-band GPS signal transmitted from a GPS satellite; a low-noise amplifier for removing noise of the received L-band GPS signal and maximally amplifying a desired signal; a frequency transformer for transforming the amplified L-band GPS signal into an up-link frequency band; a high power amplifier for amplifying the transformed up-link frequency band GPS signal; and a transmitter for transmitting the amplified signal to a stationary orbit satellite.

Claims

1. A Global Positioning System (GPS) receiver of a stationary orbit satellite, comprising:

a low-noise amplifying means for removing noise from an up-link frequency band GPS signal transmitted to the stationary orbit satellite and maximally amplifying a desired signal;

a frequency band dividing means for dividing the amplified signal into a plurality of signals each having a unique frequency bands;

a GPS signal creating means for creating the divided signals as L-band GPS signals; and

a position calculating means for selecting a GPS satellite among the L-band GPS signals and calculating a position of a stationary orbit satellite based on information on the GPS satellites and radio wave time of flight of the GPS satellites,

wherein the up-link frequency band GPS signal excludes a frequency band of the L-band GPS signal to avoid interference of the L-band GPS signal.

2. The GPS receiver as recited in claim 1, wherein when the up-link frequency band GPS signal from the GPS satellite through, the GPS repeater is received, the position calculating means removes information on a distance from the GPS satellite to the GPS repeater and calculates only a distance from the GPS repeater to the stationary orbit satellite.

3. A method for positioning a stationary orbit satellite by receiving a Global Positioning System (GPS) signal from a GPS signal repeater in a GPS receiver of the stationary orbit satellite, comprising:

a) transforming an L-band GPS signal transmitted from-a GPS satellite into an up-link frequency band signal, and transmitting the L-band GPS signal to the stationary orbit satellite based on allocated frequency band; and

b) creating the received up-link frequency band GPS signal as the L-band GPS signal, selecting only one GPS satellite based on the created L-band GPS signal, and calculating a position of the stationary orbit satellite based on information on a plurality of GPS satellites and a radio wave time of flight of the GPS satellites,

wherein a GPS signal repeater, comprises;

a GPS receiver for receiving an L-band GPS signal transmitted from a GPS satellite;

a low-noise amplifier for removing noise of the received L-band GPS signal and maximally amplifying a desired signal;

a frequency transformer for transforming the amplified L-band GPS signal into an up-link frequency band;

a high power amplifier for amplifying the transformed up-link frequency band GPS signal; and

a transmitter for transmitting the amplified signal to a stationary orbit satellite , and a GPS receiver of a stationary orbit satellite, comprises;

a low-noise amplifier for removing noise of the up-link frequency band GPS signal transmitted from the stationary orbit satellite and maximally amplifying a desired signal;

a frequency band divider for dividing the amplified signal into a plurality of unique frequency bands;

a GPS signal creator for creating a plurality of divided signals as a L-band GPS signal; and

a position calculator for selecting a GPS satellite among a plurality of L-band GPS signals and calculating a position of a stationary orbit satellite based on information on a plurality of GPS satellites and a radio wave time of flight of the GPS satellites, wherein the up-link frequency band GPS signal excludes a frequency band of the L-band GPS signal to avoid interference of the L-band GPS signal.

4. The method as recited in claim 3, wherein at least 4 GPS signal repeaters are installed on the ground in an identical structure to easily figure out a route of an electric wave and a GPS signal repeater through which the up-link frequency band GPS signal is transmitted.

5. The method as recited in claim 4, wherein since the positions of at least 4 GPS signal repeaters installed on the ground are acquired, the GPS receiver of the stationary orbit satellite calculates a position of the GPS receiver by removing information on a distance from the GPS satellite to the GPS signal repeater, and calculating only a distance from the GPS signal repeater to the stationary orbit satellite.