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AvL Technologies AAQ TLE Tracking Module, Set Up And Operation Manual

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TLE Tracking Module Operations 

Guide

 

 

 

 

AvL Technologies

 | Proprietary – Content is Subject to Change without Notice                 

 

 

 15 

 

TLE Coarse Scan Velocity – 

This is the maximum axis velocity to use during the coarse scan. The parameter is defined in 

degrees per second. This is set to accommodate for the physical speed of the antenna and for any time delay in signal 
sampling caused by the current signal source device, but should only be adjusted by the experienced operator. 

TLE Fine Scan Velocity – 

This is the maximum axis velocity to use during the fine scan. The parameter is defined in 

degrees per second. This is set to accommodate for the physical speed of the antenna and for any time delay in signal 
sampling caused by the current signal source device, but should only be adjusted by the experienced operator. 

TLE Signal Gradient Threshold

 – This is the maximum signal change that will not cause a peaking decision error during 

step peaking.  If this value is exceeded by the Current Signal Gradient then the peaking delay time will be reset. Set this 
to 0 to disable this function. 

TLE Signal Noise Threshold

 – This is the maximum signal (noise) change that will cause a peaking decision error during 

step peaking.  If this value is exceeded by the Current Signal noise then the peaking delay time will be reset. Set this to 
0 to disable this function. 

TLE Step Track Dwell Time – 

This is the amount of time to dwell for averaging measurements at each step track 

position. The time is measured in seconds. This is set to accommodate for any time delay in signal sampling caused by 
the current signal source device, but should only be adjusted by the experienced operator. 

TLE Step Track Peak Detection Threshold – 

This is an absolute measured power delta used to determine if the terminal 

is moving away from the target during step track operation. It is defined in units of the selected receiver. This must be 
set for the signal source in use as it will create the Step Track failure criteria, but should only be adjusted by the 
experienced operator. 

TLE Step Track Maximum Offset (HPBW) – 

This is the maximum distance to step off of the target during step track 

operations. It is defined as a fraction of the antennas half power beam width. This is set to accommodate for physical 
parameters of the antenna, the width of the target signal, and the current signal source device. This parameter should 
only be adjusted by the experienced operator and should be adjusted in proportion to the TLE StepTrack Step Size.

 

TLE Step Track Step Size (HPBW) – 

This is the distance to move between steps during step track operations. It is 

defined as a fraction of the antennas half power beam width. This is set to accommodate for physical parameters of 
the antenna, the width of the target signal, and the current signal source device. This parameter should only be 
adjusted by the experienced operator and should be adjusted in proportion to the TLE StepTrack Maximum Offset. 

 

3.4.

 

Feed Configuration Items 

There are no Feed Configuration Items associated with this module. 

 

 

 

 

 

 

 

 

Summary of Contents for AAQ TLE Tracking Module

Page 1: ...ng Module Setup Operations Guide Revision R11 9 0 Documentation of the TLE Tracking method module configuration and behavior when used with the AvL Technologies antenna system Appendix O AvL Technologies 900 159 014 ...

Page 2: ...ev 11 6 0 WL Change to revision sequence and additions to Configuration items 9 21 16 Rev X11 7 WL Updates for X11 7 10 21 16 R11 8 0 JF MF Updated for R11 8 added approved by in revision history 3 22 17 R 11 9 0 WL AY JF Updated for R11 9 0 Contents 1 Introduction 3 1 1 Overview 3 1 2 TLE Track Concepts 3 2 Setup Guide 4 2 1 Hardware 4 2 2 Software 4 2 3 Hardware Connection 4 2 3 1 Serial Communi...

Page 3: ...e list 20 4 4 Module Windows 22 4 4 1 Device Window 22 4 4 2 Device Control Window 22 5 Issues and Troubleshooting 24 Figures Figure 1 Version Info 4 Figure 2 TLE Core Configuration 5 Figure 3 Target Configuration tle 8 Figure 4 Target Configuration skip run method 10 Figure 5 Target Configuration reference 12 Figure 6 Signal Configuration Window tle 13 Figure 7 Sensor Output Window 17 Figure 8 Sa...

Page 4: ...TLE tracking The module will also run step track periodically to further refine the satellite location and ensure the antenna is centered on the peak power location 1 2 TLE Track Concepts A two line element set TLE is a data format encoding a list of orbital elements of an Earth orbiting object for a given point in time the epoch Using suitable prediction formula the state position and velocity at...

Page 5: ...at you are using Release R11 9 or above software From the main GUI click Version Info Main Window Help Version Info Level 0 Be sure that the Remote Client ROM and device module are at or above the versions shown below Figure 1 Version Info 2 3 Hardware Connection 2 3 1 Serial Communication Connection Serial connection is not an option for this module 2 3 2 Ethernet Communication Connection Etherne...

Page 6: ...ule uses configuration items to allow the user to tailor the module s operation and its interaction with the AAQ controller These configuration items are located in the Core Target and Signal tabs of the Configuration Window based on their scope 3 1 Core Configuration Items Path Main Window View Configuration Level 4 Figure 2 TLE Core Configuration ...

Page 7: ...ass AvL GPS Set to Compass Manual or Vector Compass Heading for Manual Compass 4 Float 0 0 to 360 0 Heading in degrees to use as the frame heading if the Heading Source is Manual Time Source 4 Choice None NTP NAV RIOM GPS XML Vector Compass GPS Manual Time Time source used by the controller for time synchronization Set to NAV RIOM GPS Vector Compass GPS or Manual Time GPS Source 4 Choice Manual GP...

Page 8: ...e Heading Source is set to Manual Time Source The current time source used to provide time sync to the AAQ controller Accurate time is needed for TLE tracking Set to Vector Compass GPS Manual or NAV RIOM GPS GPS Source The GPS source desired for acquisition Set to Vector Compass GPS Manual or NAV RIOM GPS The settings below can be used to provide manual overrides in the case of NAV RIOM or Vector ...

Page 9: ...E Line 1 4 Float Line 1 of the NORAD Two Line Ephemeris Current Satellite TLE Line 2 4 Float Line 2 of the NORAD Two Line Ephemeris TLE Scan Step Enable 4 Choice Yes No TLE scan step enable TLE Step Track Period Seconds 4 Integer 0 2678400 The amount of time between step track peaking cycles defined in seconds TLE Target Az Offset 4 Float 180 0 180 0 A manual offset to be applied to the current ta...

Page 10: ...uld be initiated by the Acquire command instead of the Track command this ensures that all tracking data is cleared TLE Step Track Period This value determines the period in seconds between Step Track cycles if TLE Scan Step Enable is set to Yes TLE Target Az Offset This is a manual offset applied to the current track position defined in degrees of azimuth This configuration item can be preset as ...

Page 11: ...tion Skip Acquire Sat State 4 Choice Yes No Flag indicating whether the acquire state should be set performed before entering track mode Set to Yes Run Repeak on Startup 4 Choice Yes No Flag indicating whether the repeak command should be run on startup if Rx is locked Run Track After Acquire 4 Choice Yes No Flag indicating that the Track Command should run after a successful acquisition Set to Ye...

Page 12: ...ing whether the repeak command should be run on startup if Rx is locked Run Track After Acquire This flag indicates that the Tracking Module should be run as part of an Acquire command This should be set to yes for TLE acquisitions Run Track After Peak Flag indicating that the Track command should be run after a successful peak command This should be set to No for TLE Tracking use Run Track on Sta...

Page 13: ...alue Range Description Reference Profile 1 1 Choice First reference profile used to update the heading with reference satellite acquisition Reference Profile 2 1 Choice Second reference profile used to update the heading with reference satellite acquisition Reference Satellite Mode 1 Choice Yes No Flag indicating that reference profiles should be used if a heading is needed ...

Page 14: ...at they emit The user may also choose to use a profile they have created Given reference satellite s the antenna will move to the reference profile s satellite position first when preforming a Track update the terminal heading and then proceed to Track the current satellite This method speeds up and improves accuracy in the Track process by giving the terminal points of reference when searching fo...

Page 15: ...variance noise that will cause a peaking decision mistake during step peaking If this value is exceeded by the Current Signal Noise then the peaking delay time will be reset Set to 0 to disable Default value 0 TLE Step Track Dwell time 4 Float 3 10 The amount of time to dwell for averaging measurements at each step track position Measured in seconds Default value 5 TLE Step Track Peak Detection Th...

Page 16: ...measurements at each step track position The time is measured in seconds This is set to accommodate for any time delay in signal sampling caused by the current signal source device but should only be adjusted by the experienced operator TLE Step Track Peak Detection Threshold This is an absolute measured power delta used to determine if the terminal is moving away from the target during step track...

Page 17: ...rol window These offsets get saved and will be used whenever that Target Profile is selected 4 1 2 TLE Scan Step Enable Yes If Acquire is commanded the controller will perform a Home routine to initialize its sensors if needed read the compass if configured to do so update the heading with Ref Sat if configured to do so and then switch to track mode Once Track mode becomes enabled the antenna will...

Page 18: ...without Notice 17 4 2 Sensor Outputs The TLE Tracking Module operation can be monitored through the Sensor Output window of the AAQ GUI Path Main Window View Sensor Output Level 0 To view the TLE Module Sensor Output variables type TLE into the keyword search window Figure 7 Sensor Output Window ...

Page 19: ... This will only get used if the TLE Scan Step Enable is set to No TLE Current Applied El Offset 0 The currently configured manual el offset from the target TLE position This will only get used if the TLE Scan Step Enable is set to No TLE Current Applied Pol Offset 0 The currently configured manual pol offset from the target TLE position TLE Pol Command 0 The polarization position to which the cont...

Page 20: ...ed by the scan from the TLE position with any previous offsets added TLE Step Track Active 4 Indicates whether or not the TLE Module is currently running StepTrack TLE Last Scan Az Offset 0 The Az offset calculated from the last scan or steptrack TLE Last Scan El Offset 0 The EL offset calculated from the last scan or steptrack TLE Step Track Peak Power Az Offset 4 The azimuth offset position of t...

Page 21: ...ht click on the Geostationary link and select Save Link As Save the resulting geo txt file where it can be found for later upload to the antenna Alternately open the Geostationary link and copy the contents into a text file Any changes to the format of the text file will cause the upload to fail this includes adding spaces or line feeds A user can create their own TLE data file for upload to the S...

Page 22: ...ellite within the profile configuration To add a new satellite manually press the Add Custom Satellite button The window below will appear Figure 9 Add New Satellite Fill in all line items including the TLE Line 1 2 items Line items should be copied and pasted from existing NORAD or equivalent ephemeris lists to assure accuracy Should the TLE data be entered incorrectly the data will populate the ...

Page 23: ...nd is not included in the software 4 4 2 Device Control Window Path Main Window View TLE Offset Control Level 0 The TLE Offset Control Window can be accessed by selecting View TLE Offset Control in the main AAQ Remote GUI or by selecting the TLE Adjust button in the Graphic Controller Window The TLE Offset Control Window can only be accessed when in the TLE Tracking mode Figure 10 Graphic Controll...

Page 24: ...direction arrows on the TLE Offset Control window are pressed the step size amount is added to the TLE Target Offset configuration item for that axis and the antenna will move by that amount while still tracking The Current Offsets are displayed in the middle of the TLE Offset Control window The Step Size is configurable from 0 02 to 5 degrees If the TLE Target has undesirable offsets saved they c...

Page 25: ...m is set to Yes System does not have time synchronization TLE Module Message sensor output shows Waiting for GPS signal and the Controller Time Offset sensor output shows 0 The system does not perform tracking If using the NAV RIOM GPS as the Time Source check that the NAV RIOM is connected and functional and check that the AvL Compass Com Port and AvL Compass Com Port Settings are correct If usin...

Page 26: ...gitude sensor outputs show 0 The system does not perform tracking Check GPS Source configuration Check that the GPS device is connected and operational In case of critical failure of the NAV RIOM GPS or Vector Compass configure the system to use a manually input Latitude and Longitude as shown in section 3 1 of this document Performing a Scan or moving to the Target position will exceed the system...

Page 27: ...ion frequency etc Check that the desired signal device feed and all cables are connected and operational TLE scan does not return to the target signal when tracking with TLE Scan Step Enable core configuration item set to Yes TLE scan passes through target signal as seen in Current Signal Level sensor output but does not return to target signal before performing step track Check that the current s...

Page 28: ...ent signal device System starts pointing to the wrong target signal during tracking with TLE Scan Step Enable core configuration item set to Yes Current Signal Level is within acceptable bounds and the TLE Tracking continues to complete successful step track cycles but the system is no longer pointed at the desired satellite Choose a more discerning signal source The TLE tracking method Scans enab...

Page 29: ...ve Check that TLE Tracking is set as the Position Hold Method and Run Position Hold After Acquire is set to Yes in the target configuration Press Track or Acquire System movement does not respond to changes to the TLE offsets Adjusting the TLE offsets through the TLE Offset Control window has no effect on antenna position Check the TLE Module Message displayed at the bottom of the TLE Offset Contr...

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