Target Positioning via Segmented Observation and Navigation Units
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Solution Overview
Problem
Existing man-portable systems for providing precise target position data in global coordinate systems suffer from limited accuracy due to the finite precision of GPS and compass measurements, which are also susceptible to magnetic disturbances.
Innovation Solution
The system physically separates target observation means from position and orientation determination means, utilizing a laser rangefinder for distance measurement and binoculars or IR cameras for observation, combined with advanced GPS systems, inertial navigation, and fiducial markers for enhanced precision and magnetic disturbance independence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If GPS and compass are integrated into the target observation system, then the system provides portability and simplicity of use, but the position and orientation determination accuracy is limited due to finite precision and magnetic disturbances
Solution Approach 1:
The system divides the target observation system into two separate components: a portable target observation means (binoculars/rangefinder) and a separate position/orientation determination means (GPS/compass). This segmentation allows each component to be optimized independently - the observation means remains portable and simple while the position determination means can use more precise instruments
Solution Approach 2:
The patent introduces a computing unit as an intermediary that receives data from both the target observation means and the position/orientation determination means, processes this data, and calculates the target position. This mediator coordinates the two separate subsystems and enables accurate target positioning through computational integration
2Volume of moving object
If GPS and compass are integrated into the target observation system, then the system remains compact and portable, but the data precision is limited by finite accuracy of the sensors
Solution Approach 1:
By separating the target observation system from the position determination system, the patent allows the observation means to remain compact and portable while the position determination means can utilize larger, more precise instruments like differential GPS receivers and inertial navigation systems
Solution Approach 2:
The separate position and orientation determination means can serve multiple functions beyond just supporting the target observation system, including navigation, positioning for other operations, and providing reference data for multiple different observation systems
3Device complexity
If compass is used for orientation determination, then the system provides a simple orientation solution, but the accuracy is compromised due to magnetic field disturbances and declination
Solution Approach 1:
The patent combines multiple orientation determination methods including compass data, inertial navigation system data, and potentially other sensors into a unified orientation determination approach. This merging allows the system to compensate for the weaknesses of individual methods through data fusion and cross-validation
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
This configuration results in a more accurate and robust system for determining target positions, providing higher precision and resistance to environmental magnetic influences, making the system smaller, lighter, and easier to handle while improving data accuracy.
Implementation Method 1
the means to determine the range to the target, such as a laser rangefinder
Implementation Method 2
a laser rangefinder 2 for determining the distance from the observer's position to the target's position
Implementation Method 3
combined with on-board inertial navigation systems often referenced as INS and used in aircraft, armored vehicles etc
Implementation Method 4
at least one camera 5 is attached to the means 3, 4 for determining the position and orientation of the system
Implementation Method 5
the images captured by a camera observing at least three fiducials fixedly attached to an object, can be used to precisely determine the position and orientation of said object relative to the camera
Data Source
Figure 1~2
AI summary
A system for determining the position of an observed target, in which means for target observation are physically separated from means for determining the position and orientation of the system is suggested. At least three fiducials and at least one camera are attached to the means for target observation and to the means for determining the position and orientation of system, respectively or vice versa.