Method and system for location-dependent time-specific correction data
First Claim
Patent Images
1. A method for delivery of location-dependent time-specific corrections to positioning signals, said method comprising:
- generating a first extended-lifetime correction for a first region, wherein the first extended-lifetime correction comprises virtual reference station correction data usable for a period greater than one minute and less than twenty minutes, the virtual reference station correction data generated based on positioning signals received from a plurality of global navigation satellite systems (GNSS) reference receivers;
using a pre-defined distribution timetable to determine a first time and a first time interval for transmitting said first extended-lifetime correction to said first region; and
transmitting said first extended-lifetime correction via a wireless communication network to said first region at the first time, and waiting to transmit a next first extended-lifetime correction to the first region until the first time interval has elapsed, wherein the first time interval is greater than one minute and less than twenty minutes.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and system for delivery of location-dependent time-specific corrections. In one embodiment, a first extended-lifetime correction for a first region is generated. A distribution timetable is used to determine a first time interval for transmitting the first extended-lifetime correction to the first region. The first extended-lifetime correction is then transmitted via a wireless communication network to said first region in accordance with said distribution timetable.
-
Citations
33 Claims
-
1. A method for delivery of location-dependent time-specific corrections to positioning signals, said method comprising:
-
generating a first extended-lifetime correction for a first region, wherein the first extended-lifetime correction comprises virtual reference station correction data usable for a period greater than one minute and less than twenty minutes, the virtual reference station correction data generated based on positioning signals received from a plurality of global navigation satellite systems (GNSS) reference receivers; using a pre-defined distribution timetable to determine a first time and a first time interval for transmitting said first extended-lifetime correction to said first region; and transmitting said first extended-lifetime correction via a wireless communication network to said first region at the first time, and waiting to transmit a next first extended-lifetime correction to the first region until the first time interval has elapsed, wherein the first time interval is greater than one minute and less than twenty minutes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method for delivery of location-dependent time-specific corrections, said method comprising:
-
storing a copy of a pre-defined distribution timetable within a rover station in a first region; said rover station using said pre-defined distribution timetable to determine a first time and a first time interval for receiving an extended-lifetime correction which is intended for said first region and which is configured to be usable for a period greater than one minute and less than twenty minutes, wherein the extended-lifetime correction comprises virtual reference station correction data to positioning signals and is generated based on positioning signals received from a plurality of global navigation satellite systems (GNSS) reference receivers; and said rover station using said extended-lifetime correction to determine a first corrected geographic position in said first region within the first time interval from the first time, wherein the first time interval is greater than one minute and less than twenty minutes. - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
-
17. A rover station for determining a position, said rover station comprising:
-
a positioning signal receiver configured to receive positioning signals from each of a plurality of positioning satellites; at least one wireless communication device configured to receive an extended-lifetime correction intended for a region to which said rover station is proximate via a wireless communication network, wherein the extended-lifetime correction comprises virtual reference station correction data to the positioning signals usable for a period greater than one minute and less than twenty minutes, the virtual reference station correction data generated based on positioning signals received from a plurality of global navigation satellite systems (GNSS) reference receivers; and a processor configured to access a pre-defined distribution timetable which defines a first time and a first time interval for receiving said extended-lifetime correction which is intended for said region, wherein the first time interval is greater than one minute and less than twenty minutes. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
-
-
25. A system for delivery of location-dependent time-specific corrections comprising:
-
a master reference station comprising; a distribution timetable controller input system for selectively accessing a pre-defined distribution timetable and identifying a region for delivery of an extended-lifetime correction at a defined first time within a first time interval; a corrections region selection system configured to identify at least one Global Navigation Satellite System (GNSS) reference station which is associated with said region; a corrections processor configured to access data from said at least one GNSS reference station and to generate a virtual reference station correction for said region for a first instance in time within the first time interval from the first time, wherein the virtual reference station correction is usable for a period greater than one minute and less than twenty minutes and is generated based upon positioning signals from each of a plurality of positioning satellites; an error generator configured to generate an instance of error data descriptive of the positioning signals for the first instance in time; and a communicative coupling with a wireless communication network which conveys said pre-defined distribution timetable; and a rover station configured to; access said pre-defined distribution timetable; receive said extended-lifetime correction at the first time via said wireless communication network, wherein said extended-lifetime correction comprises said virtual reference station correction and said instance of error data; and determine a first geographic position for the first instance in time within the first time interval from the first time based upon the positioning signals from each of said plurality of positioning satellites and said extended-lifetime correction, wherein the first time interval is greater than one minute and less than twenty minutes. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33)
-
Specification