Tempe, Arizona Friday, January 24, 2025 Vol. MMXXV No. 1

The Desikan Chronicle

"All the Code That's Fit to Deploy"

Arizona State University DREAMS Laboratory Exploration Division
Breaking News from the Laboratory

Local Engineer Helps Robots Find Themselves

Bharath Desikan teaches autonomous vehicles to reconstruct reality while questioning their own location

The Man Behind the Machines

At the intersection of robotics, machine learning, and environmental sensing lies a focused research effort on teaching autonomous systems how to sample and reconstruct spatial phenomena. Working in the DREAMS Lab at Arizona State University, Bharath Desikan develops algorithms that enable robots to build accurate maps of environmental fields.

The work centers on spatial field reconstruction using probabilistic models that allow autonomous platforms to reason about the structure of an environment from sparse measurements. These methods are designed for practical deployment, with an emphasis on efficiency and real world constraints.

On Probabilistic Reasoning

Gaussian Process regression provides a principled framework for uncertainty quantification in spatial modeling. GP models maintain a full posterior distribution over possible field configurations, allowing robots to reason about both predictions and confidence.

When combined with information theoretic acquisition functions, these models guide autonomous sampling toward regions that maximize expected information gain. This approach has shown promising results in aquatic field reconstruction tasks.

Latest Publication

2025
New
IEEE ICRA 2025 · Robots in the Wild

Low Cost ASV for High Resolution Spatio-Temporal Aquatic Field Reconstruction via Dynamic Kernels

Rodney Staggers Jr*, Bharath Vedantha Desikan*, Jnaneshwar Das *Equal contribution

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Current Projects

Shared Infrastructure: Docker Containers GP Reconstruction Web Dashboard

Field Estimation under Positional Uncertainty

Autonomous spatial field reconstruction using Gaussian Processes with uncertain inputs. Building a low-cost Autonomous Surface Vehicle (ASV) for aquatic environmental monitoring, with PX4 SITL simulation and comprehensive GP method comparison.

ROS 2 GPyTorch Gazebo Docker PX4

Spatio-Temporal Analysis of Tempe Town Lake

Water quality reconstruction from autonomous surface vehicle survey data using Gaussian Process regression with Kac-Rice hotspot detection. Stationary and non-stationary kernel comparison across multiple environmental variables.

GPyTorch Kac-Rice Leaflet Spatial Statistics Python

Technical Skills

Languages

Python
MATLAB
C++

Robotics

ROS 2
Gazebo
PX4
ArduPilot

Machine Learning

GPyTorch
PyTorch
NumPy
Scikit-learn

Infrastructure

Docker
Linux
Git
Bash

Research Focus Areas

Spatial Fields Gaussian Processes Adaptive Sampling Autonomous Robotics Uncertainty Quantification