Related Experiment Video
Updated: May 24, 2026
08:08
Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System
Published on: March 6, 2019
Determining the best sensing coverage for 2-dimensional acoustic target tracking.
Saeid Pashazadeh1, Mohsen Sharifi
1Computer Engineering Department, Iran University of Science and Technology, Tehran, Iran;
Sensors (Basel, Switzerland)
|March 14, 2012
Summary
Four-coverage significantly enhances acoustic target tracking accuracy in wireless sensor networks. This study proves four-coverage guarantees precise 2D tracking, unlike three-coverage limitations.
Area of Science:
- Engineering
- Computer Science
- Mathematics
Background:
- Distributed acoustic target tracking is crucial for wireless sensor networks.
- Accurate spatio-temporal information of targets is essential.
Purpose of the Study:
- To formally model 2D acoustic target tracking using algebraic geometry.
- To determine the optimal sensing coverage for accurate tracking.
- To develop and validate methods for reliable target localization.
Main Methods:
- Formal modeling of 2D acoustic target tracking using algebraic geometry.
- Derivation of necessary conditions for three-sensor coverage.
- Development of two four-sensor coverage methods: analytic tracking and redundant answer fusion.
Main Results:
- Three-sensor coverage accurately locates targets in only 53% of simulations.
- Four-sensor coverage methods achieve near-perfect accuracy.
- Both proposed four-sensor methods exhibit constant time and memory complexity (Θ(1)).
Conclusions:
- Four-sensor coverage is proven to guarantee accurate 2D acoustic target tracking under ideal conditions.
- The proposed analytic and fusion methods provide robust solutions for acoustic target tracking.
Related Concept Videos
01:06Echo
The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case, then the...
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case, then the...
01:10Design Example: Measuring Distance Between Two Points with Obstructions
When measuring distances in areas with physical obstructions, such as a lake in a field, surveyors must employ techniques to calculate accurate lengths without direct line measurements. One effective method is the offset technique, which allows for precise distance estimation over inaccessible stretches.In this scenario, a surveyor must measure a side of an area that crosses a lake. Since the measuring tape cannot span the lake, the surveyor begins by establishing a baseline that aligns with...