Systems and methods for tracking an object
First Claim
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1. A portable apparatus to track an object, comprising:
- a transmitter adapted to sending pulses of known duration, intensity and angle of arrival;
a single-substrate CMOS receiver having one or more antennas to receive the pulses of known duration, intensity and angle of arrival from the transmitter along with reflected pulse echoes, the receiver and the transmitter having synchronized clocks to resolve distance to the transmitter by comparing signal arrival time differences in clock cycles from reflected echoes captured by the one or more andwherein the angle to transmitter is simultaneously calculated by comparing the signal strength and arrival time from the one or more antennas andwherein an alarm is generated if the determined distance exceeds a preset value.
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Abstract
A portable apparatus to track an object includes a transmitter adapted to sending pulses of known duration and intensity; a receiver having one or more antennas to receive the pulses of known duration and intensity from the transmitter, the receiver and the transmitter having synchronized clocks to determine signal propagation time and distance, and wherein an alarm is generated if the determined distance exceeds a preset value.
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Citations
25 Claims
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1. A portable apparatus to track an object, comprising:
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a transmitter adapted to sending pulses of known duration, intensity and angle of arrival; a single-substrate CMOS receiver having one or more antennas to receive the pulses of known duration, intensity and angle of arrival from the transmitter along with reflected pulse echoes, the receiver and the transmitter having synchronized clocks to resolve distance to the transmitter by comparing signal arrival time differences in clock cycles from reflected echoes captured by the one or more and wherein the angle to transmitter is simultaneously calculated by comparing the signal strength and arrival time from the one or more antennas and wherein an alarm is generated if the determined distance exceeds a preset value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A portable apparatus to track an object, comprising:
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a transmitter adapted to sending pulses of known duration and intensity; a receiver to receive the pulses of known duration and intensity from the transmitter, wherein the receiver and the transmitter operate with synchronized clocks to determine signal propagation time and distance and wherein the receiver captures angle of arrival information using one or more patch antennas with a plurality of rake fingers and signals from different antennas are processed using a modified CDMA detection process; and the one or more patch antennas coupled to the receiver, the antennas having metal antenna fibers woven into clothing to prevent shielding, wherein an alarm is generated if the determined distance exceeds a preset value. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification