NAVIGATING IN AREAS OF UNCERTAIN POSITIONING DATA
First Claim
1. A method for obtaining a position of a mobile entity, the method comprising:
- receiving, with an antenna, first signals associated with a first positioning system and second signals associated with a second positioning system;
monitoring the first and second signals for interference;
locating a first candidate position of the mobile entity based on the first signals;
locating a second candidate position of the mobile entity based on the second signals; and
filtering input data to obtain output data, the output data comprising the position of the mobile entity, the input data comprising the first candidate position, the second candidate position, and interference data corresponding to the interference.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and devices for obtaining a position of a mobile entity. An antenna may be used to receive first signals associated with a first positioning system and second signals associated with a second positioning system. Interference associated with the first and second signals may be monitored. A first location unit coupled to the first receiver may identify a first candidate position by processing first data associated with the first signals. A second location unit coupled to the second receiver may identify a second candidate position by processing second data associated with the second signals. A position may be estimated by applying filter processing to input data comprising the to first candidate position, the second candidate position, and interference data associated with the interference.
-
Citations
22 Claims
-
1. A method for obtaining a position of a mobile entity, the method comprising:
-
receiving, with an antenna, first signals associated with a first positioning system and second signals associated with a second positioning system; monitoring the first and second signals for interference; locating a first candidate position of the mobile entity based on the first signals; locating a second candidate position of the mobile entity based on the second signals; and filtering input data to obtain output data, the output data comprising the position of the mobile entity, the input data comprising the first candidate position, the second candidate position, and interference data corresponding to the interference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A positioning data apparatus comprising
an antenna; -
a first receiver coupled to the antenna, the first receiver configured to process first signals received by the antenna, the first signals associated with a first positioning system; a second receiver coupled to the antenna, the second receiver configured to process second signals received by the antenna, the second signals associated with a second positioning system; an interference monitoring unit coupled to the antenna, the interference monitoring unit configured to produce interference data characterizing interference associated with the first and second signals; a first location unit coupled to the first receiver, the first location unit configured to identify a first candidate position of the positioning data apparatus by processing first data associated with the first signals; a second location unit coupled to the second receiver, the second location unit configured to identify a second candidate position of the positioning data apparatus by processing second data associated with the second signals; and a filter coupled to the first location unit, the second location unit, and the interference monitoring unit, the filter configured to process input data to obtain output data, the output data comprising the position of the positioning data apparatus, the input data comprising the first candidate position, the second candidate position, and the interference data. - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
-
17. A navigation system comprising:
-
a guidance unit including a positioning data receiver, a navigation filter, and an inertial navigation system, the navigation filter being coupled to the positioning data receiver and the inertial navigation system, the positioning data receiver including; an antenna; a first receiver coupled to the antenna, the first receiver configured to process first signals received by the antenna, the first signals associated with a first positioning system; a second receiver coupled to the antenna, the second receiver configured to process second signals received by the antenna, the second signals associated with a second positioning system; an interference monitoring unit coupled to the antenna, the interference monitoring unit configured to produce interference data characterizing interference associated with the first and second signals; a first location unit coupled to the first receiver, the first location unit configured to identify a first candidate position of the positioning data apparatus by processing first data associated with the first signals; a second location unit coupled to the second receiver, the second location unit configured to identify a second candidate position of the positioning data apparatus by processing second data associated with the second signals; and a filter coupled to the first location unit, the second location unit, and the interference monitoring unit, the filter configured to process input data to obtain output data, the output data comprising the position of the positioning data receiver, the input data comprising the first candidate position, the second candidate position, and the interference data. - View Dependent Claims (18, 19, 20, 21, 22)
-
Specification