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Lunar reconnaissance orbiter (lro) command and data handling flight electronics subsystem
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Nguyen, Quang Pursley, Scott Yuknis, William Haddad, Omar Haghani, Noosha |
| Copyright Year | 2012 |
| Description | A document describes a high-performance, modular, and state-of-the-art Command and Data Handling (C&DH) system developed for use on the Lunar Reconnaissance Orbiter (LRO) mission. This system implements a complete hardware C&DH subsystem in a single chassis enclosure that includes a processor card, 48 Gbytes of solid-state recorder memory, data buses including MIL-STD-1553B, custom RS-422, SpaceWire, analog collection, switched power services, and interfaces to the Ka-Band and S-Band RF communications systems. The C&DH team capitalized on extensive experience with hardware and software with PCI bus design, SpaceWire networking, Actel FPGA design, digital flight design techniques, and the use of VxWorks for the real-time operating system. The resulting hardware architecture was implemented to meet the LRO mission requirements. The C&DH comprises an enclosure, a backplane, a low-voltage power converter, a single-board computer, a communications interface board, four data storage boards, a housekeeping and digital input/output board, and an analog data acquisition board. The interfaces between the C&DH and the instruments and avionics are connected through a SpaceWire network, a MIL-STD-1553 bus, and a combination of synchronous and asynchronous serial data transfers over RS-422 and LVDS (low-voltage differential-signaling) electrical interfaces. The C&DH acts as the spacecraft data system with an instrument data manager providing all software and internal bus scheduling, ingestion of science data, distribution of commands, and performing science operations in real time. |
| File Size | 143215 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20120007619 |
| Archival Resource Key | ark:/13960/t3713288j |
| Language | English |
| Publisher Date | 2012-03-01 |
| Access Restriction | Open |
| Subject Keyword | Man/system Technology And Life Support Extremely High Frequencies Superhigh Frequencies Airborne/spaceborne Computers Data Systems Spacecraft Electronic Equipment Modularity Memory Computers Avionics Real Time Operation Power Converters Low Voltage Data Transfer Computers Data Management Channels Data Transmission Computer Networks Lunar Reconnaissance Orbiter Operating Systems Computers Field-programmable Gate Arrays Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
