System and method for detecting interference in global positioning satellite signals
First Claim
Patent Images
1. A system for detecting the location of a signal source, said system comprising:
- a first GPS receiver configured to receive a GPS-related information;
a first processing system configured to calculate a derived GPS parameter from at least the GPS-related information and compare the derived GPS parameter and an expected GPS parameter;
a first sensor configured to detect first information of the signal source;
a second processing system configured to calculate, from at least the first information, data representing a probable location of the source of the signal; and
a user interface configured to display the data;
wherein the user interface displays the data in response to the first processing system determining that the derived GPS parameter and the expected GPS parameter differ by at least a predetermined amount.
3 Assignments
0 Petitions
Accused Products
Abstract
A system and method are provided for detecting local interference in GPS signals. A plurality of remotely located GPS receivers are capable of receiving GPS signals and producing GPS related data. A monitoring station is capable of storing at least one expected GPS parameter for each of the plurality of GPS receivers. A first processor at the monitoring station is programmed to determine, for each of the GPS receivers, whether said GPS related data deviates from any of the at least one GPS parameter by more than a predetermined range of error, and for issuing a warning in response thereto.
32 Citations
23 Claims
-
1. A system for detecting the location of a signal source, said system comprising:
-
a first GPS receiver configured to receive a GPS-related information; a first processing system configured to calculate a derived GPS parameter from at least the GPS-related information and compare the derived GPS parameter and an expected GPS parameter; a first sensor configured to detect first information of the signal source; a second processing system configured to calculate, from at least the first information, data representing a probable location of the source of the signal; and a user interface configured to display the data; wherein the user interface displays the data in response to the first processing system determining that the derived GPS parameter and the expected GPS parameter differ by at least a predetermined amount. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method for detecting errors in GPS accuracy, comprising:
-
receiving first GPS-related data at a first marker device; calculating, from the first GPS-related data, a first GPS parameter for the first marker; receiving second GPS-related data at a second marker device different from the first marker device; calculating, from the second GPS-related data, a second GPS parameter for the second marker; comparing the first GPS parameter and the second GPS parameter; and issuing a warning if the comparison indicates an irregularity between the first GPS parameter and the second GPS parameter. - View Dependent Claims (9, 10, 11)
-
-
12. A system for locating a source of interference in GPS signals, the system comprising:
-
a plurality of GPS devices each configured to receive GPS-related data; and a monitoring unit configured to detect at least one irregularity in a GPS parameter derived from at least a first portion of the GPS-related data, said monitoring unit comprising; a user interface configured to issue a warning in response to said monitoring unit detecting an irregularity; and a processor configured to calculate an approximate location of a potential source of interference based on at least a second portion of the GPS-related data. - View Dependent Claims (13, 14, 15, 16)
-
-
17. A method for detecting errors in GPS accuracy, the method comprising:
-
detecting, at a plurality of locations, GPS-related data; calculating at each respective location GPS-related information from the GPS-related data; and sending the GPS-related information to a central monitoring unit from each location; wherein the central monitoring unit determines the existence of a signal causing an error in GPS accuracy. - View Dependent Claims (18, 19, 20, 21)
-
-
22. A method for detecting errors in GPS accuracy, comprising:
-
receiving GPS-related data at a marker; calculating, from the GPS-related data, at least one derived GPS parameter for the marker; comparing the at least one derived GPS parameter with a corresponding at least one expected GPS parameter; and issuing a warning if the comparison indicates an irregularity between any of the derived GPS parameters and any of the corresponding expected GPS parameters; wherein the expected GPS parameter and the derived GPS parameter comprise at least a quantity of GPS satellites received by the marker.
-
-
23. A method for detecting errors in GPS accuracy, comprising:
-
receiving GPS-related data at a marker; calculating, from the GPS-related data, at least one derived GPS parameter for the marker; comparing the at least one derived GPS parameter with a corresponding at least one expected GPS parameter; and issuing a warning if the comparison indicates an irregularity between any of the derived GPS parameters and any of the corresponding expected GPS parameters; wherein the expected GPS parameter and the derived GPS parameter comprise at least a set of specific satellites received by the marker.
-
Specification