Tactical all weather precision guidance and navigation system
First Claim
Patent Images
1. A system for precise relative navigation, comprising:
- a plurality of reference sensors that receive data from the global positioning system;
a central processing node that receives global positioning system satellite data from each of the reference sensors, computes a set of correction parameters for each satellite based upon error detecting and minimizing algorithms housed in the central processing node, and transmits said correction parameters; and
a weapon system that receives data from the global positioning system, receives the correction parameters from the central processing node, and generates from the received data and the received correction parameters precise position information and steers itself to a target in accordance with the precise position information.
2 Assignments
0 Petitions
Accused Products
Abstract
Precision navigation within a theater of operations is performed by receiving, at each of a plurality of spaced apart known locations, GPS satellite signals from a plurality of GPS satellites, wherein the known locations approximately define the theater of operations. A measure of error in the GPS satellite signal for each of the plurality of GPS satellites is determined. The measures of error in the GPS satellite signals are utilized to correct GPS satellite signals received at an unknown location within the theater of operations. The corrected GPS satellite signals are then used to determine a precise position of the unknown location within the theater of operations.
-
Citations
30 Claims
-
1. A system for precise relative navigation, comprising:
-
a plurality of reference sensors that receive data from the global positioning system;
a central processing node that receives global positioning system satellite data from each of the reference sensors, computes a set of correction parameters for each satellite based upon error detecting and minimizing algorithms housed in the central processing node, and transmits said correction parameters; and
a weapon system that receives data from the global positioning system, receives the correction parameters from the central processing node, and generates from the received data and the received correction parameters precise position information and steers itself to a target in accordance with the precise position information.
-
-
2. A method for precision navigation within a theater of operations, comprising:
-
receiving via GPS receivers, at each of a plurality of spaced apart known locations, GPS satellite signals from a plurality of GPS satellites, wherein the known locations approximately define the theater of operations;
providing the received GPS satellite signals to a central processing node;
filtering the provided signals to differentiate between errors local to the known locations and errors specific to the GPS satellites;
determining GPS satellite clock and ephemeris corrections based on the differentiated errors; and
transmitting the determined GPS satellite clock and ephemeris corrections to mobile units within the theater of operations. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A system for precision navigation and guidance within a theater of operations, comprising:
a plurality of spaced apart GPS sensors at calibrated locations that approximately define the theater of operations;
means for determining a measure of error in GPS satellite signals received by each GPS sensor; and
means for using the measures of error in GPS satellite signals to correct GPS satellite signals received at an unknown location within the theater of operations; and
means for using the corrected GPS satellite signals to precisely locate the unknown location within the theater of operations. - View Dependent Claims (16, 17, 18, 19, 20)
-
21. A method of precisely determining a location within a theater of operations that is approximately defined by a plurality of spaced apart known locations, the method comprising:
-
at each of the plurality of spaced apart known locations, receiving geolocation satellite signals from a plurality of geolocation satellites, wherein;
the geolocation satellite signals include time information; and
for any one of the geolocation satellites, the time information included in the geolocation satellite signals received at one of the spaced apart locations is not the same as the time information included in the geolocation satellite signals received at another of the spaced apart locations;
communicating the received geolocation satellite signals from the known locations to a processing node;
the processing node reordering the communicated geolocation satellite signals according to the time information included in the communicated geolocation satellite signals;
for each of the geolocation satellites, using the reordered geolocation satellite signals and information about the known locations to estimate an error in the received geolocation satellite signals;
for each of the geolocation satellites, communicating the estimated error to a position-determining device within the theater of operations;
the position-determining device receiving geolocation satellite signals from the geolocation satellites;
the position-determining device using the estimated errors to correct each of the received geolocation satellite signals; and
the position-determining device using the corrected geolocation satellite signals to precisely determine the location of the position-determining device within the theater of operations. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
-
Specification