Distributed Antenna Tracking for Beacon-Free Responder Location
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Solution Overview
Problem
Existing systems fail to accurately determine the location of first responders within buildings without the use of special location-determination systems, such as Bluetooth Low Energy beacons, which not all first responders carry.
Innovation Solution
A distributed antenna system with integrated level detectors, time taggers, and communication modules to measure and tag signal strength and timing, enabling triangulation for position determination using a sensor processor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If Bluetooth Low Energy beacons or specialized location-determination systems are used, then location accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The distributed antenna system performs dual functions: providing wireless communication coverage and enabling location tracking. The same antennas and signal processing infrastructure used for communication are repurposed to detect and analyze radio signal characteristics for position determination, eliminating the need for separate location-determination hardware
Solution Approach 2:
The system uses the first responder's own radio equipment to generate the signals needed for location tracking. The radio signals already transmitted for communication purposes are captured and analyzed by the distributed antenna system to determine position, without requiring the first responder to carry additional location-determination devices
2Measurement precision
If specialized location-determination systems are required, then location tracking accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The system automatically tracks first responders using their existing radio equipment without requiring them to carry or operate specialized location-determination devices. The location tracking function is provided passively through the analysis of routine radio communications
3Measurement precision
If distributed antenna systems with integrated detection capabilities are deployed, then location determination capability is improved, but manufacturing cost increases
Solution Approach 1:
The distributed antenna system components perform multiple functions: signal amplification, distribution, and location detection. By integrating level detectors and time taggers into existing antenna nodes, the system achieves location determination capability without requiring completely new hardware infrastructure
Solution Approach 2:
The system combines communication functions and location tracking functions into a single integrated infrastructure. The same physical antennas and signal processing equipment used for wireless communication are simultaneously used to detect and analyze radio signals for position determination
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate location tracking of first responders within buildings using existing radios, enhancing safety by determining their positions without specialized beacons.
Implementation Method 1
Each of the antennas includes a level detector to detect and measure a strength of an input signal from the radio of the first responder to produce a level signal
Implementation Method 2
Each antenna further includes a time tagger to tag the detected input signal with a timing signal
Implementation Method 3
a sensor processor configured to receive the signal level and timing signal from the signal distribution network of each of the plurality of antennas, to determine the position of the radio relative to each of the plurality of antennas according to the level signal and timing signal
Data Source
AI summary
A system and method for determining a position of a first responder in a building, where the first responder is using a radio, and using a distributed antenna system. Each antenna has a level detector to detect and measure a strength of an input signal from the radio of the first responder to produce a level signal, a time tagger to tag the detected input signal with a timing signal, and a communication module to transmit the level signal and timing signal. A sensor processor connected with a signal distribution network is configured to receive the signal level and timing signal from the signal distribution network of each of the plurality of antennas, to determine the position of the radio relative to each of the plurality of antennas according to the level signal and timing signal.