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aas-18-290-6dof

aiaa_gnc2020_d4pg

Open sourced D4PG implementation of a spacecraft proximity operations task, presented in a paper at the AIAA GNC SciTech 2020 conference in Orlando, Florida

aiaa_gnc_2021

Code accompanying the paper Hovell, K., Ulrich, S., and Bronz, M., “Acceleration-based Quadrotor Guidance Under Time Delays Using Deep Reinforcement Learning,” AIAA Guidance, Navigation, and Control Conference, Nashville, TN, 11-21 Jan, 2021.

asteroid_cpo_seeker

barad2020msc

Resources for CNN-based spacecraft navigation around uncooperative spacecraft.

bayes-by-backprop

TensorFlow implementation of Bayes-by-Backprop algorithm from "Weight Uncertainty in Neural Networks" paper

bayesbyhypernet

Code for the paper Implicit Weight Uncertainty in Neural Networks

ccscp

Chance-Constrained Sequential Convex Programming for Robust Trajectory Optimization

combined_experiment

My contribution to the SRCL combined experiment, where I provide deep reinforcement learning-based guidance for spacecraft pose tracking with acceleration signals. This is essentially my Phase 3 approach on the Phase 1 task, with some extensions.

ddp_se_halo

Master's Thesis: single-phase hybrid differential dynamic programming applied to low-thrust Sun-Earth L1 halo to L2 halo orbit transfers.

dl-rendezvous-guidance

dp_soc

Dynamic Programming (DP) for solving the Stochastic Optimal Control (SOC) problem (the HJP partial differential equation)

drl_cg

Deep Reinforcement Learning (DRL) code for maneuvering a spacecraft with adaptive ZEM/ZEV in constant gravity

ece5555----convex-optimal-rocket-landing-guidance

you know what it is

fft-cddp

Trajectory optimization for a missile model using Flexible Final Time Constrained Differential Dynamic Programming (FFT-CDDP).

gravnav

Orbit simulation

gym-aero

OpenAI gym environments for learning flight guidance, navigation and control tasks using reinforcement learning

hat

Overcoming catastrophic forgetting with hard attention to the task

homework

Assignments for CS294-112.

imm_tensorflow

Overcoming Catastrophic Forgetting by Incremental Moment Matching (IMM)

initial_guess_sel1l2_halo

Master's Thesis: initial guess construction for Sun-Earth L1-L2 Halo transfer for use in DDP. Uses multiple-shooting with low-thrust enabled nodes.

jgcd_2021

Code that accompanies the paper "Spacecraft Robotic Capture and Simultaneous Stabilization Using Deep Reinforcement Learning-based Guidance", submitted for possible publication in the Journal of Guidance, Control, and Dynamics

jsr2020_d4pg

Open-sourced deep guidance implementation using the D4PG algorithm for spacecraft proximity operations as detailed in Hovell and Ulrich's JSR 2020 paper.

learning_to_remember_rare_events

mae6060----spacecraft-attitude-control

satellites

mgalt-stops

Multiple Gravity-Assist Low-Thrust (MGALT) version of the Spacecraft Trajectory Optimization Suite (STOpS) developed by Malloy for his thesis work at Cal Poly SLO

molto-it

Multi-Objective Low-Thrust Optimizer for Interplanetary Transfers

opnav

Spacecraft Optical Navigation

optimal-rendezvous-guidance

A short foray into Optimal Guidance and Control Schemes for Spacecraft Rendezvous. The main one demonstrated is that of Zanetti.

overcoming-catastrophic

Implementation of "Overcoming catastrophic forgetting in neural networks" in Tensorflow