US 10,871,574 B2 · Kinematics-augmented position validation

Abstract

In one implementation, a method includes receiving a number of instances of a message that includes a self-reported position of a transmitter of the message from a corresponding number of satellite-based receivers that each received an RF transmission of an instance of the message. The method also includes determining the number of satellite-based receivers that received an instance of the message and selecting a validation technique based on the number of satellite-based receivers that received an instance of the message. If the number of satellite-based receivers that received an instance of the message is one, a propagation-based validation technique is selected. The method further includes determining a measure of the likelihood that the self-reported position of the transmitter is valid using the selected validation technique, and transmitting an indication of the measure of the likelihood that the self-reported position is valid.

Claims21

Dependent claims

A method comprising:

receiving a number of instances of a message from a corresponding number of satellite-based receivers that each received a radio frequency (“RF”) transmission of an instance of the message, the message comprising a self-reported position of a transmitter of the message;
determining the number of satellite-based receivers that received an instance of the message;
selecting a validation technique, from a plurality of validation techniques, for validating the self-reported position of the transmitter of the message based on the number of satellite-based receivers that received an instance of the message;
determining a measure of the likelihood that the self-reported position of the transmitter is valid using the selected validation technique;
and
transmitting an indication of the measure of the likelihood that the self-reported position is valid.

3 more elements

A method comprising:

receiving an instance of a current message from a satellite-based receiver that received a radio frequency (“RF”) transmission of the current message, the current message comprising a self-reported position of a transmitter of the message;
estimating, based on a previous message transmitted by the transmitter at a previous time, a current position of the transmitter based on a previous position of the transmitter at the previous time, a previous speed of the transmitter at the previous time, a previous bearing of the transmitter at the previous time, and a current time at which the transmitter transmitted the RF transmission of the current message;
determining a measure of the likelihood that the self-reported position of the transmitter is valid based on a distance between the estimated current position of the transmitter and the self-reported position of the transmitter;
and
transmitting an indication of the measure of the likelihood that the self-reported position is valid.

2 more elements

A system comprising:

one or more processors;
and
a memory coupled to the processors comprising instructions executable by the processors, the processors being operable when executing the instructions to:
receive a number of instances of a message from a corresponding number of satellite-based receivers that each received a radio frequency (“RF”) transmission of an instance of the message, the message comprising a self-reported position of a transmitter of the message;
determine the number of satellite-based receivers that received an instance of the message;
select a validation technique, from a plurality of validation techniques, for validating the self-reported position of the transmitter of the message based on the number of satellite-based receivers that received an instance of the message;
determine a measure of the likelihood that the self-reported position of the transmitter is valid using the selected validation technique;
and
transmit an indication of the measure of the likelihood that the self-reported position is valid.

6 more elements

Dependencies are inferred from the claim text.

Kinematics-augmented position validation

Life of this patent

Kinematics-augmented position validation

Life of this patent

Abstract

Claims21