RESEARCH CONCEPTS RC3000 Uživatelský manuál

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RC3000 Antenna Controller Appendix TLE Two Line Element Tracking
TLE-1
Appendix TLE – Two Line Element Tracking Option
Revision: 1 Apr. 2005 Software Version: 1.48
This appendix describes the unique functions of the RC3000’s two line element (TLE) tracking option.
1.1 Manual Organization
This appendix is provided as a supplement to the baseline RC3000 manual and the inclined orbit tracking
option appendix (appendix TRK). The paragraph numbering scheme of those two documents are
followed when data specific to the ephemeris tracking option is described.
1.2 RC3000 Features
The TLE tracking option provides additional capabilities to the RC3000’s satellite LOCATE and inclined
orbit TRACK modes. All functions of the basic step/memory track option are retained.
Software Configuration. If the TLE tracking option is purchased, the software will be designated as “E”
instead of “T” for basic step/memory tracking.
Example: the software for a RC3000 purchased with GPS and Fluxgate, TLE tracking and remote control
capability would be designated RC3K-xx-GER.
1.3.2 System Interface Requirements
The same interface requirements needed by the basic tracking option are required to mechanize
ephemeris tracking. Most notable is the requirement for high resolution (such as resolver ) sensors on
the azimuth and elevation axes.
1.3.3 Operational Overview
The ephemeris tracking option provides enhanced performance for the LOCATE and TRACK features of
the RC3000.
When performing a LOCATE function, the ephemeris option allows the RC3000 to predict the current
azimuth and elevation of an inclined orbit satellite.
When TRACKing, the ephemeris option allows the RC3000 to follow an inclined orbit satellite even if a
signal strength indication is not present.
1.3.4 Antenna Pointing Solution
The enhanced LOCATEing and TRACKing capabilities are accomplished by predicting satellite position
based on the satellite’s current NORAD Two Line Element (TLE) ephermeris data set.
NOTE: current ephemeris data for the satellite must be loaded into the ACU for the TLE option to perform
correctly.
1.3.5 Tracking Inclined Orbit Satellites
The ephemeris tracking option introduces an additional tracking submode designated as
EPHEM_TRACK. With the basic tracking option, when signal strength was lost during STEP_TRACK the
RC3000 would either no longer move the antenna until signal strength returned or it would enter a search
pattern. With EPHEM_TRACK, the position of the satellite is predicted for the current date and time and
the RC3000 continues to move the antenna until signal strength returns.
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Shrnutí obsahu

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RC3000 Antenna Controller Appendix TLE Two Line Element Tracking TLE-1 Appendix TLE – Two Line Element Tracking Option Revision: 1 Apr. 2005 Softw

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RC3000 Antenna Controller Appendix TLE Two Line Element Tracking TLE-10 3.3.1.1.4.1 Line 1 Data FIELD COL DESCRIPTION EXAMPLE COMMENTS1.1 1 Line

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RC3000 Antenna Controller Appendix TLE Two Line Element Tracking TLE-11 3.3.1.1.4.2 Line 2 Data FIELD COL DESCRIPTION EXAMPLE COMMENTS 2.1 1 Lin

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RC3000 Antenna Controller Appendix TLE Two Line Element Tracking TLE-12

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RC3000 Antenna Controller Appendix TLE Two Line Element Tracking TLE-2 2.0 INSTALLATION Ephemeris tracking mechanizes an “open-loop” pointing of t

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RC3000 Antenna Controller Appendix TLE Two Line Element Tracking TLE-3 3.0 DETAILED OPERATION 3.2.2.3 Locate If a satellite that doesn’t have e

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RC3000 Antenna Controller Appendix TLE Two Line Element Tracking TLE-4 TILT ESTIMATE As discussed in section 2.3.2 of this appendix, the elevatio

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RC3000 Antenna Controller Appendix TLE Two Line Element Tracking TLE-5 NOTE: if the track signal source (3.3.1.3.12) is set to “NONE”, the user wil

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RC3000 Antenna Controller Appendix TLE Two Line Element Tracking TLE-6 Initially the mount is moved to the DEPLOY position. From there, pitch is d

Strany 10 - 3.3.1.1.4.1 Line 1 Data

RC3000 Antenna Controller Appendix TLE Two Line Element Tracking TLE-7 3.2.2.9 Track How the basic TRACK mode sequences through submodes is descr

Strany 11 - 3.3.1.1.4.2 Line 2 Data

RC3000 Antenna Controller Appendix TLE Two Line Element Tracking TLE-8 3.2.2.9.6 Ephemeris Track The EPHEM_TRACK submode may be entered via tw

Strany 12 - TLE-12

RC3000 Antenna Controller Appendix TLE Two Line Element Tracking TLE-9 3.3.1.1.3 Preset Satellites In addition to the normal data associated with

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