Long baseline RTK using a secondary base receiver a non-continuous data link and a wireless internet connectivity

• US 6,507,738 B1
• Filed: 12/31/1999
• Issued: 01/14/2003
• Est. Priority Date: 05/21/1999
• Status: Expired due to Term

• Current Assignee: Trimble Navigation Limited (Trimble Inc.)
• Original Assignee: Trimble Navigation Limited (Trimble Inc.)
• Inventors: Allison, Michael Timo, Ciganer, Ann
• Primary Examiner(s): Bost, Dwayne
• Assistant Examiner(s): WEST, LEWIS G
• Application Number:
  US09/477,045
• Time in Patent Office: 1,110 Days
• Field of Search: 455/427, 455/456, 701/214, 701/215, 701/216, 701/213, 701/207, 701/300, 342/357.06, 342/357.08, 342/357.1
• US Class Current: 455/427
• CPC Class Codes: G01S 19/04 providing carrier phase data
• CPC Class Codes: G01S 19/43 using carrier phase measurements, e.g. kinematic positioning; using long or short baseline interferometry

Abstract

The system and method for long baseline RTK survey are disclosed. The system includes a primary base station (PBS), a secondary base station (SBS), a primary data link between the PBS and the SBS, and a secondary data link between the SBS and a rover. The PBS, the SBS, and the rover are equipped with satellite antennas for satellite navigational purposes, and with the wireless Internet data accesses devices (WIDAD). The long baseline vector between the PBS and the rover is established by combining the primary baseline vector between the SBS and the PBS and the secondary baseline vector between the SBS and the rover. The PBS is placed in a position with a known location. The PBS wirelessly downloads its logged set of data into the Internet server using the (PBS-WIDAD). The SBS determines its precise position coordinates by accessing wirelessly the PBS logged data on the Internet server using the (SBS-WIDAD). The rover determine its position coordinates in real time by accessing SBS directly using the (Rover-WIDAD), or determines its coordinates using the batch delayed delivery method by wirelessly accessing the SBS position coordinates published on the Internet server.

Claims

1. A system for long baseline kinematic positioning (LBRTK) comprising:

a primary base station (PBS) comprising;

a PBS computer; and

a PBS wireless Internet data access device (PBS-WIDAD);

a secondary base station (SBS) comprising;

an SBS computer; and

an SBS wireless Internet data access device (SBS-WIDAD);

a primary data link between said SBS and said PBS; and

a secondary data link between said SBS and a rover;

wherein said PBS is configured to transmit data to said SBS using said primary data link,

and wherein said SBS is configured to compute a secondary base position (SBS_P) relative to a primary base position (PBS_P) using said transmitted data from said PBS;

and wherein said rover is configured to perform an RTK survey using said SBS_P transmitted to said rover using said secondary data link.

2. The system of claim 1, wherein said primary data link between said SBS and said PBS further comprises:

an Internet server; and

wherein said PBS-WIDAD wirelessly downloads a set of logged PBS data into said Internet server; and

wherein said SBS-WIDAD wirelessly accesses said set of PBS logged data from said Internet server.

3. A system for long baseline kinematic positioning (LBRTK) comprising:

a secondary base station (SBS) further including;

an SBS computer; and

an SBS wireless Internet data access device (SBS-WIDAD);

a primary data link between said SBS and a primary base station (PBS); and

a secondary data link between said SBS and a rover;

said rover including a rover wireless Internet data access device (Rover-WIDAD);

wherein said PBS is configured to transmit a compressed data set to said SBS using said primary data link,

and wherein said SBS is configured to compute a secondary base position (SBS_P) relative to a primary base position (PBS_P) using said transmitted compressed data set from said PBS;

and wherein said rover is configured to perform an RTK survey using said SBS_P transmitted to said rover using said secondary data link.

4. The system of claim 3, wherein said primary data link between said SBS and said PBS further comprises:

an Internet server; and

wherein said PBS-WIDAD wirelessly downloads a set of logged PBS data into said Internet server; and

wherein said SBS-WIDAD wirelessly accesses said set of PBS logged data from said Internet server; and

wherein said rover wirelessly accesses said SBS computer in real time via Internet using said Rover-WIDAD in order to precisely determine said rover'"'"'s position fixes.

5. The system of claim 3, wherein said primary data link between said SBS and said PBS further comprises:

an Internet server; and

wherein said PBS-WIDAD wirelessly downloads a set of logged PBS data into said Internet server; and

wherein said SBS-WIDAD wirelessly accesses said set of PBS logged data from said Internet server; and

wherein said SBS-WIDAD wirelessly downloads its precise position coordinates into said Internet server; and

wherein said rover wirelessly accesses said Internet server using said Rover-WIDAD in order to precisely determine said rover'"'"'s position fixes.

6. A method for long baseline kinematic positioning (LBRTK) comprising the steps of:

transmitting a set of data from a primary base station (PBS) to an Internet server using a PBS wireless Internet data access device (PBS-WIDAD);

processing and storing said set of data from said primary base station (PBS-data) on said server;

wirelessly accessing said (PBS-data) on said Internet server using an SBS wireless Internet data access device (SBS-WIDAD) by said SBS;

computing a secondary base position (SBS_P) relative to a primary base position (PBS_P) using said PBS-data by said SBS;

wirelessly transmitting said secondary base position (SBS_P) to said Internet server using said (SBS-WIDAD) by said SBS; and

wirelessly accessing said Internet server to obtain said secondary base position (SBS_P) using a rover wireless Internet data access device (Rover-WIDAD) by said rover in order to determine said rover'"'"'s precise position coordinates.

7. A method for long baseline kinematic positioning (LBRTK) comprising the steps of:

transmitting a set of data from a primary base station (PBS) to an Internet server using a PBS wireless Internet data access device (PBS-WIDAD);

processing and storing said set of data from said primary base station (PBS-data) on said server;

wirelessly accessing said (PBS-data) on said Internet server using an SBS wireless Internet data access device (SBS-WIDAD) by said SBS;

computing a secondary base position (SBS_P) relative to a primary base position (PBS_P) using said PBS-data by said SBS; and

wirelessly accessing said secondary base position (SBS_P) in real time using a rover wireless Internet data access device (Rover-WIDAD) by said rover in order to determine said rover'"'"'s precise position coordinates.