A5036540894- Astro and Planetary Science
- Spacecraft Dynamics and Control
- Planetary Science and Exploration
- Space Satellite Systems and Control
- Spaceflight effects on biology
- Numerical methods for differential equations
- Solar and Space Plasma Dynamics
- Stellar, planetary, and galactic studies
- Inertial Sensor and Navigation
- Target Tracking and Data Fusion in Sensor Networks
- Quantum chaos and dynamical systems
- Advanced Measurement and Detection Methods
- Ocular and Laser Science Research
- Atmospheric aerosols and clouds
- Robotics and Sensor-Based Localization
- Computational Fluid Dynamics and Aerodynamics
- Space Science and Extraterrestrial Life
- Ionosphere and magnetosphere dynamics
- Space Exploration and Technology
- Geophysics and Gravity Measurements
- Atmospheric Ozone and Climate
- GNSS positioning and interference
- Magnetic confinement fusion research
- Geological and Geochemical Analysis
- Infrared Target Detection Methodologies
Goddard Space Flight Center
2022-2023
Johns Hopkins University Applied Physics Laboratory
2023
The University of Texas at Austin
2014-2020
United States Air Force Research Laboratory
2006
Abstract The Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) spacecraft mission characterized collected a sample from asteroid (101955) Bennu. After the OSIRIS-REx Sample Return Capsule released to Earth’s surface in 2023 September, diverted into new orbit that encounters (99942) Apophis 2029, enabling second with same unique capabilities: OSIRIS–Apophis (APEX). On 2029 April 13, 340 m diameter will draw within ∼32,000 km of surface,...
A new crew Mars architecture has been developed that provides many potential benefits for NASA-led human moons and surface missions beginning in the 2030s or 2040s. By using both chemical electric propulsion systems where they are most beneficial maintaining as much orbital energy possible, Hybrid spaceship carries round trip to is pre-integrated before launch can be delivered orbit by a single launch. After check-out on way cis-lunar space, it refueled travel less than 1100 days, with...
View Video Presentation: https://doi.org/10.2514/6.2022-2469.vid After jettisoning its Sample Return Capsule (SRC) containing regolith samples from the near-Earth asteroid (101955) Bennu to Earth in September 2023, Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer (OSIRIS-REx) spacecraft will perform a divert maneuver safely fly by at an altitude of 250 km. SRC return officially mark completion spacecraft's primary mission; however, it continue on...
Growing interest in on-orbit servicing, formation flight, and active debris removal drives the need for cost-effective robust space systems capable of performing autonomous proximity operations. In many situations, relative pose estimates between non-cooperative agents are required reliable navigation. Monocular cameras can function as low-mass, low-power sensors to obtain these estimates, a key first step using monocular imagery estimation is bearing estimation. this paper, we present...
The cannonball assumption of three-degree-of-freedom (3DOF) space object state prediction can lead to large inaccuracies if the sphericity is violated, while numerical propagation both translational and rotational (6DOF) equations motion computationally expensive. In this paper, a middle ground proposed, in which are propagated numerically using approximate attitude predictions obtained via closed-form perturbation solution. capabilities semianalytical "hybrid" special general techniques...
Long-range laser communications links offer many potential advantages to satellite systems including high bandwidth, security, and a small physical footprint. However, the establishment of link can be very difficult time consuming due extremely beam divergences stringent platform stability requirements inherent lasercom systems. Most difficulty lies in first step actually painting partner terminal with spot or detecting said large uncertainties, vibrations jitter, bright optical backgrounds...
NASA Goddard Space Flight Center is developing Autonomous Navigation Guidance and Control (autoNGC) as a flight software system for future onboard use missions in variety of orbital regimes, including cislunar space beyond. This paper describes processor-in-the-loop (PIL) testing using lunar landing scenario with terrain relative navigation (TRN) weak-signal GPS. We give an overview the autoNGC project, describe preliminary simulation results. also TRN PIL tests on flight-like development...
Whitepaper #431 in the Decadal Survey for Solar and Space Physics (Heliophysics) 2024-2033. Main topics: space weather applications; basic research. Additional space-based missions/projects; user-need-driven