Command angle torquing of gyros in the Apollo Guidance and Navigation System.
Apollo Guidance and Navigation System positioning by electrically torquing gyros, discussing error sources
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Apollo Guidance and Navigation System positioning by electrically torquing gyros, discussing error sources
Error model digital computer program applied to lunar surface hybrid navigation concepts, noting accuracy requirements from 1972 to 1985
Performance errors analysis of navigation using inertial guidance and radar tracking
Linearized manual space navigation incorporating redundant measurements to compensate for instrumentation inaccuracies
Navigation satellites of next decade, discussing services for air and sea intercontinental transportation vehicles
Guidance, navigation and two phases of targeting of Saturn V lunar landing mission, analyzing launch, boost to orbit and iterative guidance
Unidentified landmark navigation from orbiting vehicle by computer simulation, noting instrumentation accuracies
Strapdown and gimballed inertial navigation systems history, engineering progress and current developments
Navigation and guidance analysis of Mars probe launched from manned flyby spacecraft for 1975- 1976
Man-machine design for Apollo spacecraft navigation, guidance and control systems
Navigation satellites for information during movements of manned/unmanned terrestrial vehicles containing position determination, communications and weather relay service and scientific sensors
Updated inertial navigation of continuously powered space vehicle during lunar landing mission, utilizing altimeter and Doppler radar
Detecting water hazards is a significant challenge to unmanned ground vehicle autonomous off-road navigation. This paper focuses on detecting the presence of water during the daytime using color cameras. A multi-cue approach is taken. Evidence of the presence of water is generated from color, texture, and the detection of reflections in stereo range data. A rule base for fusing water cues was developed by evaluating detection results from an extensive archive of data collection imagery containing water. This software has been implemented into a run-time passive perception subsystem and tested thus far under Linux on a Pentium based processor.
This paper will describe the search methods to be used using the radio and optical observations, and will provide a description of the methods and performance of the autonomous onboard rendezvous navigation system.
In the future, navigation and communication in Earth-Moon space and on the Moon will differ from past practice due to evolving technology and new requirements. Here we describe likely requirements, discuss options for meeting them, and advocate steps that can be taken now to begin building the navcom systems needed in coming years for exploring and using the moon.
The Mars Network provides proximity based communications and navigation services to support Mars exploration. The network will be comprised of science orbiters with a MN relay transceiver, and potentially, dedicated telecommunication orbiters. The common MN transceiver, called Electra, is currently in deployment, and is being designed for both communications and radiometric tracking.
Obstacle detection is one of the main components of the control system of autonomous vehicles. In the case of indoor/urban navigation, obstacles are typically defined as surface points that are higher than the ground plane. This characterization, however, cannot be used in cross-country and unstructured environments, where the notion of ground plane is often not meaningful.
The 2001 Mars Odyssey Mission has returned an Orbiter to Mars to map the planet and search for water. This paper will present an overview of the Navigation performance, with a comparison of the pre-launch requirements and expected performance to the in-flight experience.