Accession Number : ADA265234


Title :   Petite Amateur Naval Satellite Spacecraft Digital Control System: A Hardware Design


Descriptive Note : Master's thesis,


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA


Personal Author(s) : Ashe, John D


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a265234.pdf


Report Date : Mar 1993


Pagination or Media Count : 120


Abstract : This thesis provides the foundational hardware design for the Digital Control System of the Petite Amateur Navy Satellite (PANSAT). The design implements a multitasking operating system to provide store and forward communications. This design contains 'pair and a spare' technology to provide redundancy for space operations. Addresses necessary for software design are discussed and examples of initializing commands for the more complex sections are given. CMOS technology was used throughout the design to minimize the power requirements. RS422 protocol was used on all communications lines to lessen the impact of noise. The MSOC 186 microprocessor coupled with an 82C55 Programmable Peripheral Interface are the cornerstone of the design. All peripheral sections, Telemetry, Memory, and Communications are designed to be controlled by the M80Cl86 vis the 82C55. Since the mission of PANSAT may be changed slightly before the launch of the vehicle, the hardware design contained in this document is engineered to be upwardly compatible where possible.... Petite amateur navy satellite, Digital control system, Spacecraft telemetry collection, Spread spectrum, Store and forward communications


Descriptors :   *CONTROL SYSTEMS , *SPACECRAFT , *DIGITAL COMMUNICATIONS , *DATA MANAGEMENT , COMPUTER PROGRAMS , INTERFACES , MISSIONS , NAVAL OPERATIONS , REDUNDANCY , STORES , SPREAD SPECTRUM , SPACE WARFARE , COLLECTION , NOISE , POWER , ARTIFICIAL SATELLITES , THESES , MICROPROCESSORS , IMPACT , REQUIREMENTS


Subject Categories : Astronautics


Distribution Statement : APPROVED FOR PUBLIC RELEASE