US 10,705,182 B2 · Wideband ranging system

Abstract

A ranging system includes an input for receiving a wireless signal and a detector for determining an estimate of a time-of-arrival of the wireless signal at the ranging system. The detector includes a first module for processing the wireless signal according to a non-linear, monotonic transformation to generate a modified signal, a second module for compressing the modified signal according to a linear transformation, resulting in a compressed signal including a number of elements, each element corresponding to a different time segment of the modified signal, and a third module for applying a decision function for determining an output including a first element of the number of elements, corresponding to the time-of-arrival of the wireless signal at the ranging system, applying the decision function, including comparing the elements of the compressed signal to corresponding thresholds of a number of thresholds associated with the number of elements.

Claims33

Dependent claims

A ranging system comprising:

an input for receiving a wireless signal;
a detector for determining an estimate of a time-of-arrival of the wireless signal at the ranging system, the detector including:
a first module for processing the wireless signal according to a non-linear, monotonic transformation to generate a modified signal;
a second module for compressing the modified signal according to a linear transformation, resulting in a compressed signal including a plurality of elements, each element corresponding to a different time segment of the modified signal;
and
a third module for applying a decision function for determining an output including a first element of the plurality of elements, corresponding to the time-of-arrival of the wireless signal at the ranging system, applying the decision function, including comparing the elements of the compressed signal to corresponding thresholds of a plurality of thresholds associated with the plurality of elements.

3 more elements

A method for configuring a ranging system comprising:

choosing a set of hypotheses, each hypothesis of the plurality of hypotheses being associated with a different time-of-arrival of a wireless signal at the ranging system;
choosing a model of the environment in which the ranging system is deployed;
configuring the ranging system according to a non-linear monotonic transformation, the non-linear monotonic function being parameterized by a first set of one or more parameters;
configuring the ranging system according to a linear compression function, the linear compression function being parameterized by a second set of one or more parameters;
configuring the ranging system according to a decision function, the decision function being parameterized by a third set of one or more parameters;
updating the first set of one or more parameters, the second set of one or more parameters, and the third set of one or more parameters according to a metric associated with an estimated performance of the ranging system in the environment, over the set of hypotheses, when configured according to the first set of one or more parameters, the second set of one or more parameters, and the third set of one or more parameters.

3 more elements

Dependencies are inferred from the claim text.

Wideband ranging system

Life of this patent

Wideband ranging system

Life of this patent

Abstract

Claims33