System and method for radar tracking using communications packets
AssigneeMitsubishi Electric Research Laboratories, Inc.
InventorsZafer Sahinoglu, Sinan Gezici
Life of this patent
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Abstract
According to the invention, IEEE 802.15.4a packets are used for communications, ranging and passive radar (detecting changes/motions, tracking objects in the environment) functionality. Changes and motions in the environment are detected by exploiting the specific preamble structure of the IEEE 802.15.4a packets. A sequence of packets transmitted through an environment is received. Each packet includes a preamble. The preamble in each packet is despread to update a reference multipath profile and to obtain a current multipath profile for a currently received packet. The reference multipath profile is compared with the current multipath profile to detect an object in the environment.
Claims19
A method for detecting an object in an environment, comprising the steps of:
- receiving a sequence of packets transmitted through an environment, each packet including a preamble;
- despreading the preamble in each packet to update a reference multipath profile and to obtain a current multipath profile for a currently received packet;
- and
- comparing the reference multipath profile with the current multipath profile to detect an object in the environment.
A system for detecting an object in an environment, comprising:
- a receiver portion in a transceiver configured to receive a sequence of packets transmitted through an environment, each packet including a preamble;
- a despreader configured to despread the preamble in each packet to update a reference multipath profile and to obtain a current multipath profile for a currently received packet;
- and
- a comparator configured to compare the reference multipath profile with the current multipath profile to detect an object in the environment.
Dependencies are inferred from the claim text.