Spacecraft Guidance Algorithms for Asteroid Intercept and Rendezvous Missions
نویسندگان
چکیده
منابع مشابه
Aas 11-531 Guidance Algorithms for Asteroid Intercept Missions with Precision Targeting Requirements
Rendezvous and intercept missions to smaller asteroids require precision guidance and control in the terminal mission phase. The zero-effort-miss (ZEM) and zero-effort-velocity (ZEV) information are used to formulate autonomous feedback guidance laws. A terminal-phase guidance strategy for a variety of intercept missions is developed. Different types of navigation information are assumed to be ...
متن کاملThe Laser Rangefinder on the near Earth Asteroid Rendezvous Spacecraft
In 1999, the Near Earth Asteroid Rendezvous (NEAR) mission will place a spacecraft with five facility instruments, including the NEAR Laser Rangefinder (NLR), into a low-altitude (-50 km) orbit about the asteroid 433 Eros. The NLR is a high-fidelity altimeter capable of 3 1.5cm resolution and c2-m accuracy, and will be operate-d continuously while at Eros. The NLR design is quite robust and is ...
متن کاملGuidance and Control for Spacecraft Autonomous Rendezvous and Proximity Maneuvers using a Geometric Mechanics Framework
Autonomous rendezvous and proximity operations between a chaser spacecraft and a target space object, consist of autonomous controlled approach and controlled docking with or controlled capture of the target by the chaser. Guidance, navigation and control problems during autonomous rendezvous and proximity maneuvers between spacecraft are challenging, particularly when the target spacecraft or ...
متن کاملEvolving ANNs for Spacecraft Rendezvous and Docking
We here approach the problem of designing a controller for automatic rendezvous and docking (AR&D). As a first step towards a fully reactive neurocontroller (based on state feedback), an artificial neural network is trained offline by a fitness based genetic algorithm to fulfill the docking task. Its performance using one specific docking case, with fixed initial and boundary conditions, is com...
متن کاملHigh-Resolution Bistatic Radar Imaging in Support of Asteroid & Comet Spacecraft Missions
High-resolution imaging of potential targets in advance of any spacecraft mission is important for reducing mission cost and risk and improving science returns. In particular, ground-based radar imaging provides highly-accurate ephemerides and shape and spin state information for objects that pass near the Earth. At higher resolution, radar images show surface features such as boulders and pote...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Aeronautical and Space Sciences
سال: 2012
ISSN: 2093-274X
DOI: 10.5139/ijass.2012.13.2.154