Patent ID: 11867799
Assignee: CARRIER FIRE & SECURITY EMEA BV
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method of using a radar sensor for a security system to determine a range for a sensed moving object or person, the method comprising:
transmitting, from the radar sensor, a plurality of radar pulses and, when the object or person is present to reflect the radar pulses, receiving a corresponding plurality of pulses, the transmitting and receiving comprising:
transmitting a first radar pulse having a first defined pulse duration;
receiving a first reflected radar pulse, wherein the first reflected radar pulse is at least a portion of the first radar pulse that has reflected off of the object or person;
determining, at the radar sensor, whether there is a first pulse overlap between the first radar pulse and the first reflected radar pulse;
selecting a second defined pulse duration for a second radar pulse based on the determination of the first pulse overlap;
transmitting the second radar pulse having the second pulse duration;
receiving a second reflected radar pulse, wherein the second reflected radar pulse is at least a portion of the second radar pulse that has reflected off of the object or person; and
determining, at the radar sensor, whether there is a second pulse overlap between the second radar pulse and the second reflected radar pulse; and
determining a range in which the object or person is located based on the determinations of the first pulse overlap and the second pulse overlap.