* ħħħħħħħ ħħħħħħ ħħħħħħħ ħħħħħħħ.ħħħħħħħ ħħħħħħ ħ ħħ ħ ħ ħ ħ ħ ħ ħ ħ ħ ħ ħħ ħ ħħħħħ ħ ħħħ ħ ħ ħħħħħ ħħħħħħħ ħ ħħħħ ħ ħ ħ ħ ħħ. ħ ħ ħ ħ ħħ ħ ħħħħħħħ ħ ħ ħħħ ħ ħ ħħħħħħħ ħ ħħħ . . . °°°°°°° °° . . ° ° . . °°°°°°° ° ° ° °°°°°°° °° °°° Copyright (c) 1989-1995 Thomas C. Johnson Johnson Scientific International ================================================================= PC-TRACK VERSION 3.1 ================================================================= What is PC-TRACK? PC-TRACK is a simple but sophisticated means of tracking earth orbiting satellites. PC-TRACK is capable of tracking up to 300 satellites simultaneously in 3D or on a flat mercator projection! PC-TRACK is useful to amateur radio and weather satellite users, science teachers, experimenters, and serious satellite users. Use it for demonstrating orbital mechanics, predicting availability times, making presentations, performing satellite constellation studies, and general orbital analyses. PC-TRACK uses satellite data readily available from NASA and other sources. PC-TRACK offers the following features. PROGRAM FEATURES New For Version 3.1: - Incorporates SGP4/SDP4 propagation algorithms - Capture graphics screens to PCX files - Visualize mutually visible passes in 3D - Improved graphics controls - Different colors for dark and illuminated satellites - Satellite and Site databases enlarged to 300 objects - Can track up to 300 satellites simultaneously. Existing Features: - Integrated Mutual Visibility Pass Scan capability. - Runs in DOS protected mode, utilizing up to 16MB of memory. - Can track in 3D on spherical world projections. - Uses 640x480 VGA resolution. - Text screen tracking for users with no VGA capability. - Scan for visible passes - Scan all satellites to find illuminated sats. - Rapid graphics screen redraw. - Informative satellite position display. - All colors and parameters user definable. - Capable of having separate parameter files for different track/display scenarios. - Quick start-up. - Downlink frequency displays, showing doppler shift. - Display orbital phase, based on current mean anomaly. - Multiple maps of world and continents available. - Can be configured to track using UTC time or LOCAL time - Can be configured to display distances using metric or english system. - Full control of Date, Time, and Interval used to predict object data. - Site and Satellite data sorted by name. - Includes import capability for NASA 2 line Orbital Elements or AMSAT data files. - Select from over 100 printer drivers. ============================================================================= G E T T I N G S T A R T E D ============================================================================= WHAT YOU NEED... In order to run properly, PC-TRACK needs... ŝ any 80386SX, 80386, 80486 or Pentium processor based system. (A math coprocessor SIGNIFICANTLY improves performance, but is not necessary to run.) ŝ 2 - 16 MB ŝ at least 5MB of disk space. ŝ MS-DOS or PC-DOS version 5.0 or greater. ŝ VGA Color Video (Required for graphics use. Any lesser video standard will work using the TEXT track capability). ŝ Printer (optional) ŝ The operational files included on the Distribution Disk. ======================================================================== R U N N I N G P C - T R A C K ======================================================================== A] Start PC-TRACK by typing PCT3 B] Read the on-line help by pressing F1 anywhere in the program. C] Read the additional documentation for the product. ======================================================================== Known Problems With PC-Track 3.1 ======================================================================== This application utilizes the DOS Protected Mode Interface (DPMI) protocol. This means it runs in Protected mode, which is a CPU mode that permits programs to access ALL available extended memory in your computer, not just a portion of the 640K conventional memory like most of the other programs you may be running. This has caused problems on a handful of systems. For complete information regarding this, see PROBLEMS.TXT. ======================================================================== ======================================================================== OTHER PRODUCTS: ======================================================================== See the file called PRODUCTS.TXT for information on other satellite analysis and visualization products available from Johnson Scientific International. Copyright (c) 1989-1995 Thomas C. Johnson Johnson Scientific International 9746 US Route 36 St. Paris, OH. 43072 Voice: 513-663-0032 FAX: 513-663-0462 Compuserve Id: 71371,1257 Internet: 71371.1257@compuserve.com info@jsci.com ****** VISIT OUR WORLD WIDE WEB SITE ******* http://www.jsci.com/ ********************************************