Back to results
US 9,432,811 B2Granted
Estimating the lateral location of a wireless terminal based on temperature and atmospheric pressure
AssigneePolaris Wireless, Inc.
InventorsDavid S. De Lorenzo, Benjamin Lipeles Segal, Jian Zhu
Life of this patent
Estimating the term…
Abstract
A technique is disclosed for estimating the lateral location of a wireless terminal in a geographic region. The technique is based on the recognition that some three-dimensional locations of the wireless terminal are improbable, and that measurements of temperature and atmospheric pressure at the wireless terminal and outside can be used to determine which lateral locations of the wireless terminal are improbable.
Claims34
A method of estimating the lateral location of a wireless terminal, the method comprising:
- receiving, at a data processing system, the identity of a radio signal that is received by a wireless terminal;
- receiving, at the data processing system, a measurement of atmospheric pressure at the wireless terminal;
- designating at least one of a plurality of possible lateral locations of the wireless terminal as improbable based on:
- (i) the measurement of atmospheric pressure at the wireless terminal;
- and
- estimating the lateral location of the wireless terminal to be one of the plurality of possible lateral locations of the wireless terminal not designated as improbable based on:
- (i) the identity of the radio signal.
4 more elements
A method of estimating the lateral location of a wireless terminal, the method comprising:
- receiving, at a data processing system, a measurement of a location-dependent trait of a radio signal as received by a wireless terminal;
- receiving, at the data processing system, a measurement of atmospheric pressure at the wireless terminal;
- designating at least one of a plurality of possible lateral locations of the wireless terminal as improbable based on:
- (i) the measurement of atmospheric pressure at the wireless terminal;
- and
- estimating the lateral location of the wireless terminal to be one of the plurality of possible lateral locations of the wireless terminal not designated as improbable based on:
- (i) the measurement of the location-dependent trait of the radio signal.
4 more elements
A method of estimating the lateral location of a wireless terminal, the method comprising:
- receiving, at a data processing system, a measurement of a difference of a location-dependent trait of:
- (1) a first radio signal as received by a wireless terminal, wherein the first radio signal is transmitted by a first transmitter at a first location, and
- (2) a second radio signal as received by the wireless terminal, wherein the second radio signal is transmitted by a second transmitter at a second location, and
- receiving, at the data processing system, a measurement of atmospheric pressure at the wireless terminal;
- designating at least one of a plurality of possible lateral locations of the wireless terminal as improbable based on:
- (i) the measurement of atmospheric pressure at the wireless terminal;
- and
- estimating the lateral location of the wireless terminal to be one of the plurality of possible lateral locations of the wireless terminal not designated as improbable based on:
- (i) the measurement of the difference of the location-dependent trait.
6 more elements
A method of estimating the lateral location of a wireless terminal, the method comprising:
- receiving, at a data processing system, the identity of a radio signal that is received by a wireless terminal;
- receiving, at the data processing system, a measurement of temperature at the wireless terminal;
- designating at least one of a plurality of possible lateral locations of the wireless terminal as improbable based on:
- (i) the measurement of temperature at the wireless terminal;
- and
- estimating the lateral location of the wireless terminal to be one of the plurality of possible lateral locations of the wireless terminal not designated as improbable based on:
- (i) the identity of the radio signal.
4 more elements
A method of estimating the lateral location of a wireless terminal, the method comprising:
- receiving, at a data processing system, a measurement of a location-dependent trait of a radio signal as received by a wireless terminal;
- receiving, at the data processing system, a measurement of temperature at the wireless terminal;
- designating at least one of a plurality of possible lateral locations of the wireless terminal as improbable based on:
- (i) the measurement of temperature at the wireless terminal;
- and
- estimating the lateral location of the wireless terminal to be one of the plurality of possible lateral locations of the wireless terminal not designated as improbable based on:
- (i) the measurement of the location-dependent trait of the radio signal.
4 more elements
A method of estimating the lateral location of a wireless terminal, the method comprising:
- receiving, at a data processing system, a measurement of a difference of a location-dependent trait of:
- (1) a first radio signal as received by a wireless terminal, wherein the first radio signal is transmitted by a first transmitter at a first location, and
- (2) a second radio signal as received by the wireless terminal, wherein the second radio signal is transmitted by a second transmitter at a second location, and
- receiving, at the data processing system, a measurement of temperature at the wireless terminal;
- designating at least one of a plurality of possible lateral locations of the wireless terminal as improbable based on:
- (i) the measurement of temperature at the wireless terminal;
- and
- estimating the lateral location of the wireless terminal to be one of the plurality of possible lateral locations of the wireless terminal not designated as improbable based on:
- (i) the measurement of the difference of the location-dependent trait.
6 more elements
Dependencies are inferred from the claim text.