Integrated Beacon System for Personnel Localization and Identification
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Solution Overview
Problem
In combat operations, it is challenging to distinguish friend from foe and locate incapacitated personnel due to the limitations of existing separate active IR beacon and passive IR reflector systems, particularly when incapacitated personnel are sheltered from observation.
Innovation Solution
An integrated identification system that combines an active light beacon, an RF beacon, and a controller within a housing, allowing independent control of both beacons, with the RF beacon operating at a low duty cycle for long-distance localization and the IR beacon for short-range identification, and an IR selective reflector for backup in case of beacon failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate active IR beacon and passive IR reflector systems are used, then friend-from-foe identification and incapacitated personnel location are enabled, but the systems cannot provide both short-range and long-range capabilities simultaneously and require separate equipment
Solution Approach 1:
The patent combines an active IR beacon, passive IR reflector, and RF beacon into a single integrated device housing. This merging allows the device to provide both short-range identification (via active IR beacon) and long-range localization (via RF beacon) capabilities simultaneously, eliminating the need for separate systems while maintaining operational versatility.
Solution Approach 2:
The integrated device performs multiple functions: the active IR beacon provides short-range friend-from-foe identification, the passive IR reflector provides backup identification capability, and the RF beacon enables long-range localization of incapacitated personnel. This multi-functionality in a single device resolves the contradiction between versatility and complexity.
2Reliability
If active IR beacon is turned on continuously for identification, then friend-from-foe distinction is maintained, but unfriendly forces can observe and clone the beacon to spoof air support
Solution Approach 1:
The active IR beacon operates in a periodic or controlled manner rather than continuously, allowing friendly forces to maintain identification while limiting the window of opportunity for unfriendly forces to observe and clone the beacon. The controller manages beacon activation based on operational requirements, reducing spoofing vulnerability.
Solution Approach 2:
The controller acts as an intermediary between the active IR beacon and external observation, managing beacon activation based on operational context. It coordinates beacon on/off cycles and integrates with RF beacon operations to provide identification while minimizing exposure to spoofing attempts by hostile forces.
3Difficulty of detecting and measuring
If passive IR reflector is used for locating incapacitated personnel, then personnel can be located, but rescue becomes extremely difficult when personnel are captured and sheltered from observation
Solution Approach 1:
The patent replaces the purely passive optical reflection mechanism with an active RF beacon system. The RF beacon transmits radio frequency signals that can penetrate shelters and obstacles, enabling location of incapacitated personnel even when they are captured or sheltered from optical observation. This substitution of detection mechanism maintains location capability while improving reliability in challenging scenarios.
Solution Approach 2:
The system changes the detection parameter from optical reflection (passive IR) to electromagnetic radiation (active RF). This parameter change enables the system to detect personnel through obstacles and in sheltered conditions where passive optical methods fail, significantly improving the reliability of rescue operations.
4Length of stationary object
If RF beacon operates at high power for long-distance localization, then incapacitated personnel can be located at extended ranges, but battery life is reduced
Solution Approach 1:
The RF beacon operates in periodic intervals rather than continuously, transmitting localization signals only when needed for long-range detection. This periodic operation maintains extended localization range capability while significantly conserving battery life compared to continuous high-power transmission.
Solution Approach 2:
The controller dynamically adjusts RF beacon power levels and transmission intervals based on operational requirements and distance to target. This dynamic operation allows the system to achieve long-range localization when necessary while minimizing energy consumption during normal operations, extending overall battery life.
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
The integrated system enables effective identification of friend or foe and facilitates efficient search and rescue operations by providing both short-range and long-range localization capabilities while conserving battery life and extending the duration of identification signals.
Implementation Method 1
an IR selective reflector for backup in case of beacon failure
Implementation Method 2
an active light beacon supported by the housing
Implementation Method 3
an RF beacon supported by the housing
Data Source
AI summary
An integrated identification system including a housing, an active light beacon supported by the housing, an RF beacon supported by the housing, and a controller coupled to the active light beacon and RF beacon to facilitate independent control of the active light beacon and RF beacon.