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Mohammed Shalaby

5 accepted papers

2021

Cascaded Filtering Using the Sigma Point Transformation

RA-L 2021

It is often convenient to separate a state estimation task into smaller “local” tasks, where each local estimator estimates a subset of the overall system state. However, neglecting cross-covariance terms between state estimates can result in overconfident estimates, which can ultimately degrade the

Cited by 6SourceScholar
2021

Heading Estimation Using Ultra-Wideband Received Signal Strength and Gaussian Processes

RA-L 2021

It is essential that a robot has the ability to determine its position and orientation to execute tasks autonomously. Heading estimation is especially challenging in indoor environments where magnetic distortions make magnetometer-based heading estimation difficult. Ultra-wideband (UWB) transceivers

Cited by 1SourceScholar
2021

Localization with Directional Coordinates

IROS 2021poster

A coordinate system is proposed that replaces the usual three-dimensional Cartesian x, y, z position coordinates, for use in robotic localization applications. Range, azimuth, and elevation measurement models become greatly simplified, and, unlike spherical coordinates, the proposed coordinates do n…

Cited by 1SourceScholar
2021

Relative Position Estimation Between Two UWB Devices With IMUs

RA-L 2021

For a team of robots to work collaboratively, it is crucial that each robot have the ability to determine the position of their neighbors, relative to themselves, in order to execute tasks autonomously. This letter presents an algorithm for determining the three-dimensional relative position between

Cited by 49SourceScholar
2021

Relative Position Estimation in Multi-Agent Systems Using Attitude-Coupled Range Measurements

RA-L 2021

The ability to accurately estimate the position of robotic agents relative to one another, in possibly GPS-denied environments, is crucial to execute collaborative tasks. Inter-agent range measurements are available at a low cost, due to technologies such as ultra-wideband radio. However, the task o

Cited by 57SourceScholar