11 papers
Hybrid Particle Gaussian Mixture (H-PGM) Solution for Cislunar Target Tracking
Ishan Paranjape, Tarun Hejmadi, Utkarsh Ranjan Mishra +1
Gauss's method of orbit determination (OD) is one of the most popular, minimal assumption target tracking techniques in astrodynamics, especially for generating an initial state es…
A Sequential Quadratic Programming Perspective on Optimal Control
Abhijeet, Suman Chakravorty
This paper investigates the performance of Newton's method, iterative Linear Quadratic Regulator (iLQR), and Differential Dynamic Programming (DDP) in solving discrete-time optimal…
State Forecasting in an Estimation Framework with Surrogate Sensor Modeling
Sriram Narayanan, Mohamed Naveed Gul Mohamed, Ishan Paranjape +3
In recent years, computational power and data availability breakthroughs have revolutionized our ability to analyze complex physical systems through the inverse problem approach. D…
A Hybrid Particle Gaussian Mixture Filtering Method for Cislunar Orbit Determination Under Extreme Uncertainty
Ishan Paranjape, Tarun Hejmadi, Utkarsh Ranjan Mishra +1
Gauss's method of orbit determination (OD) and its variants are among the most popular initial state estimation techniques for astronomers and engineers alike. However, owing to it…
Probabilistic Methods for Initial Orbit Determination and Orbit Determination in Cislunar Space
Ishan Paranjape, Tarun Hejmadi, Suman Chakravorty
In orbital mechanics, Gauss's method for orbit determination (OD) is a popular, minimal assumption solution for obtaining the initial state estimate of a passing resident space obj…
An Optimal Solution to Infinite Horizon Nonholonomic and Discounted Nonlinear Control Problems
Mohamed Naveed Gul Mohamed, Abhijeet, Aayushman Sharma +2
This paper considers the infinite horizon optimal control problem for nonlinear systems. Under the condition of nonlinear controllability of the system to any terminal set containi…