Underwater Transmitter Localization Using Reflection-Aware Signal Correction
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Solution Overview
Problem
Existing location estimation methods for underwater transmitting devices are inaccurate due to signal reflections from the sea surface and seafloor, especially in shallow water environments, leading to significant errors in estimated locations.
Innovation Solution
A transmitting device location estimation device and method that includes a distance location estimation unit, direction estimation unit, and estimated location confirmation unit, which utilize reception sensors to calculate distances, directions, and correct locations based on signal reflection angles and water depth, enabling accurate location estimation even in shallow water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If location estimation is performed in shallow water environments, then the system can operate in diverse water conditions, but signal reflections from sea surface and seafloor cause significant location estimation errors
Solution Approach 1:
The system performs preliminary calculations of vertical distance and reflection angles before final location estimation. By pre-calculating these parameters and comparing them against threshold values, the system can identify reflected signals in advance and apply corrections to maintain location estimation accuracy in shallow water environments
Solution Approach 2:
The system uses feedback mechanisms where the estimated location is continuously verified against calculated vertical distances and reflection angles. When reflections are detected, the system adjusts the location estimation based on the reflected signal characteristics, creating a feedback loop that corrects location errors in real-time
2Measurement precision
If the system calculates vertical distance and reflection angles to correct location estimation, then location accuracy improves, but the processing complexity increases
Solution Approach 1:
The location estimation process is segmented into distinct modules: vertical distance calculation, reflection angle estimation, and location correction. Each module handles a specific aspect of the problem independently, making the overall complex process more manageable and easier to implement through modular processing units
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
Accurately estimates the location of underwater transmitting devices without error, correcting for signal reflections from the sea surface and seafloor in both deep and shallow water environments.
Implementation Method 1
the signal transmitted by the transmitting device is received after being reflected by the sea surface and sea floor
Data Source
AI summary
A transmitting device location estimation device and a transmitting device location estimation method for estimating the location of a transmitting device under water are disclosed. A transmitting device location estimation device, in a transmitting device location estimation device for estimating the location of a transmitting device under water, is characterized by comprising: a distance location estimation unit that estimates the distance and location of the transmitting device based on the time taken to receive the transmission signal transmitted by the transmitting device and the speed of the transmission signal; a direction estimation unit that estimates the direction of the transmitting device; and an estimated location confirmation unit that confirms the estimated location of the transmitting device based on the estimated distance and location of the transmitting device and the estimated direction of the transmitting device.