Navigation Systems
Navigation Systems - Related Videos
20:12
Using MazeSuite and Functional Near Infrared Spectroscopy to Study Learning in Spatial Navigation
0 Views •
Cited by 209 •
2011
MazeSuite is a complete toolset to prepare, present and analyze navigational and spatial experiments. Functional near-infrared spectroscopy (fNIR) is an optical brain imaging technique that enables noninvasive and portable monitoring of cerebral blood oxygenation changes. This paper summarizes collective use of MazeSuite and fNIR within a cognitive processing learning paradigm.
05:19
Practical Methodology of Cognitive Tasks Within a Navigational Assessment
0 Views •
Cited by 1 •
2015
Children who have complex communication needs can benefit from the use of a speech-generating device (SGD). Cognitive skills were identified as having an impact on the ability to navigate between levels of SGDs. This protocol describes the steps needed for Speech-language Pathologists to assess cognitive skills and navigational abilities.
05:47
Evidence-based Knowledge Synthesis and Hypothesis Validation: Navigating Biomedical Knowledge Bases via Explainable AI and Agentic Systems
0 Views •
Cited by 1 •
2025
This article describes RUGGED (Retrieval Under Graph-Guided Explainable disease Distinction), which integrates Large Language Model (LLM) inference with Retrieval-Augmented Generation (RAG). It draws evidence from expert-curated biomedical knowledge bases and peer-reviewed biomedical publications to synthesize new knowledge from up-to-date information, identify explainable and actionable predictions, and pinpoint promising directions for hypothesis-driven investigations.
08:12
Two-photon Calcium Imaging in Mice Navigating a Virtual Reality Environment
0 Views •
Cited by 98 •
2014
Here we describe the experimental procedures involved in two-photon imaging of mouse cortex during behavior in a virtual reality environment.
09:13
Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures
0 Views •
Cited by 51 •
2013
This report provides a detailed description of a new remote navigation system based on magnetic driven forces, which has been recently introduced as a new robotic tool for human cardiac electrophysiology procedures.
FAQs
Global navigation satellite systems determine position by comparing precisely timed radio signals. Because the signals propagate from known sources and carry timing information, their travel times provide distance-related measurements for trilateration, allowing the system to locate an object relative to a reference frame. This timing-based approach is especially important when direct measurement of position is unavailable.
An inertial navigation system derives motion from accelerometers and gyroscopes rather than relying continuously on external signals. Accelerometers measure changes associated with movement, while gyroscopes track rotation; the system uses these measurements to calculate how an object moves within a reference frame. This makes inertial motion a distinct complement to signal-based positioning.
Triangulation and trilateration use different measured quantities. Triangulation relies on direction, whereas trilateration uses travel-time information to infer distances from signals. Navigation systems may therefore select or combine principles according to which measurements are available. The distinction matters in physics because position depends not only on the measured quantity, but also on the reference frame used to interpret it.
A typical navigation workflow begins by selecting a reference frame, measuring travel time, direction, acceleration, or rotation, and then combining those measurements into an estimate of position and motion. The system can apply error correction after the initial calculation. This sequence links physical observations to a usable path estimate without treating any single measurement as sufficient in every situation.
Combining satellite and inertial measurements can improve accuracy because the two approaches provide different kinds of information. Radio-signal timing supplies externally referenced measurements, while accelerometers and gyroscopes track motion from within the moving system. Their integration is useful when a navigation task requires both an estimate of current position and a continuous account of movement.
In physics, navigation systems provide practical settings for studying reference frames, wave propagation, and motion tracking. Spacecraft guidance, autonomous vehicles, robotics, surveying, and geophysical measurement each apply the same general challenge to different moving or measured objects. The resulting data can describe position, motion, or path, making navigation relevant to both engineered systems and physical observation.