Oscillation Observation Device Using Carrier Phase Velocity
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Solution Overview
Problem
Existing oscillation measurement technologies for objects like ships, such as real-time kinematic positioning, require a reference station and complex configurations, and inertial sensors face challenges in aligning with the ship's directions, leading to precision issues and increased complexity.
Innovation Solution
An oscillation observation device with a first receiver and processing circuitry that measures carrier phases to calculate velocity and oscillation in the translational direction, eliminating the need for a reference station and improving precision by using acceleration data and coordinate transformations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If real-time kinematic positioning is used to measure oscillation, then measurement precision is improved, but device complexity increases due to requiring a reference station and communication parts
Solution Approach 1:
The patent extracts and eliminates the reference station component from the RTK system, using only the receiver on the oscillating object to measure carrier phases. This removes the need for communication infrastructure while maintaining the ability to calculate oscillation from carrier phase changes.
Solution Approach 2:
The system uses the receiver itself to perform all measurements and calculations needed for oscillation detection. The receiver measures carrier phases, the processor calculates velocity from phase changes, and the system determines oscillation amplitude independently without external reference stations.
2Device complexity
If code phases of positioning signals are used to measure oscillation, then device complexity is reduced, but measurement precision degrades
Solution Approach 1:
The patent changes the measurement parameter from code phases to carrier phases. Carrier phases provide higher precision for velocity and oscillation calculations, while the processing methodology is optimized to efficiently extract oscillation information from carrier phase measurements without excessive complexity.
3Device complexity
If inertial sensors are used to measure oscillation, then device complexity is reduced, but measurement precision deteriorates due to difficulty in matching ship directions with sensor detecting directions
Solution Approach 1:
The patent replaces inertial sensors with a positioning signal-based measurement system. Instead of using accelerometers that require complex orientation matching, the system uses carrier phase measurements from positioning satellites to directly calculate velocity and oscillation in the translational direction, eliminating orientation alignment issues.
Data Source
AI summary
An oscillation observation device includes a first receiver and processing circuitry. The first receiver is configured to measure carrier phases of positioning signal. The processing circuitry is configured to calculate a velocity of an object by using an amount of change in the carrier phases measured by the first receiver, and calculate an amount of oscillation of the object in a translational direction using the velocity.