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Update Deadreckoning feature description for calibration saving in Sleep mode GPKTMA-1826 < Deleted Gyro comment > Reason: PO request.
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{{#switch: {{{model}}}
{{#switch: {{{model}}}
 
| FTM927
| FTC927
| FTC927
| FTM887
| FTM887
| FTC887
| FTC887
| FTC968 =
| FTC308
| FTM308 =
== Dead Reckoning ==
== Dead Reckoning ==
'''Dead Reckoning''' is a navigation technique used to estimate current position of vehicle   , direction of movement, based on its previous position and known speed. It uses additional sensor data to correct the position received from GNSS receiver.<br>
'''Dead Reckoning''' is a navigation technique used to estimate current position of vehicle, direction of movement, based on its previous position and known speed. It uses additional sensor data to correct the position received from GNSS receiver. For a detailed explanation and demonstration, check out '''[https://www.youtube.com/watch?v=TOVAL0zRuK0 Dead Reckoning Explained Youtube video]'''.<br>


Usage of Dead Reckoning is essential in scenarios where GNSS signal is weak or unavailable, such as underground parking lots, tunnels or dense forests.<br>
Usage of Dead Reckoning is essential in scenarios where GNSS signal is weak or unavailable, such as underground parking lots, tunnels or dense forests.<br>
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* Dead Reckoning alignment maintenance – If Dead Reckoning alignment parameters are no longer valid, send the DR_RESET command and perform calibration.
* Dead Reckoning alignment maintenance – If Dead Reckoning alignment parameters are no longer valid, send the DR_RESET command and perform calibration.
* Electric and hybrid vehicles – For electric and hybrid vehicles, DIN1 should be used for movement detection to ensure correct Dead Reckoning operation.
* Electric and hybrid vehicles – For electric and hybrid vehicles, DIN1 should be used for movement detection to ensure correct Dead Reckoning operation.
* Dead Reckoning is not supported for two‑wheeled vehicles (e.g., motorcycles, scooters).


=== <u>Basic Operation</u> ===
=== <u>Basic Operation</u> ===
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'''<u>Installation</u>'''<br>
'''<u>Installation</u>'''<br>


The device must be mounted firmly in the vehicle, with good visibility of the sky. Failure to ensure proper mounting will result in inability to calibrate the device or inaccurate position estimation. DIN1 should be connected to the vehicle ignition (''' applicable to trackers with DIN1'''), it will be used to detect both ignition status and movement, ensuring optimal performance. Following examples ensure that the GNSS antenna is facing towards the sky and there are no physical obstacles, like metal plates,  wires, are blocking the GNSS signal.  
The device must be mounted firmly in the vehicle, with good visibility of the sky. Failure to ensure proper mounting will result in inability to calibrate the device or inaccurate position estimation. Following examples ensure that the GNSS antenna is facing towards the sky and there are no physical obstacles, like metal plates,  wires, are blocking the GNSS signal.  


Good '''mounting''' examples ( <span style="color:red">'''If vehicle has a heated windshield, you should look for an alternative mounting location in the trunk, on some sturdy metal closer to backseat window'''</span>):<br>
Good '''mounting''' examples ( <span style="color:red">'''If vehicle has a heated windshield, you should look for an alternative mounting location in the trunk, on some sturdy metal closer to backseat window'''</span>):<br>
<div style="display: flex; flex-direction: row;">
<div style="display: flex; flex-direction: row;">
[[File:FTC927 under the front dashboard in the middle of the car.jpg|thumb|left|280px|link=Special:Redirect/file/FTC927 under the front dashboard in the middle of the car.jpg|Dashboard in the middle of the car mount]]
[[File:FTC927 under the front dashboard in the middle of the car.jpg|thumb|left|280px|link=Special:Redirect/file/FTC927 under the front dashboard in the middle of the car.jpg|Dashboard in the middle of the car mount]]
[[File:Dead reckoning Above glove box.jpg|thumb|left|300px|link=Special:Redirect/file/Dead reckoning Above glove box.jpg|Above glove box]]
[[File:FTC927 above the glove box.jpg|thumb|left|300px|link=Special:Redirect/file/FTC927 above the glove box.jpg|Above glove box]]
</div>
<div style="display: flex; flex-direction: row;">
[[File:Dead reckoning In the trunk-1.jpg|thumb|left|300px|link=Special:Redirect/file/Dead reckoning In the trunk-1.jpg|In the trunk]]
[[File:Dead reckoning In the trunk-2.jpg|thumb|left|300px|link=Special:Redirect/file/Dead reckoning In the trunk-2.jpg|In the trunk]]
[[File:FTC927 beneath the speedometer panel.jpg|thumb|left|300px|link=Special:Redirect/file/FTC927 beneath the speedometer panel.jpg|Beneath the speedometer panel]]
[[File:FTC927 beneath the speedometer panel.jpg|thumb|left|300px|link=Special:Redirect/file/FTC927 beneath the speedometer panel.jpg|Beneath the speedometer panel]]
[[File:FTC927 above the glove box.jpg|thumb|left|300px|link=Special:Redirect/file/FTC927 above the glove box.jpg|Above glove box]]
</div>
<div style="display: flex; flex-direction: row;">
[[File:Dead reckoning Under the hood.jpg|thumb|left|300px|link=Special:Redirect/file/Dead reckoning Under the hood.jpg|Under the hood]]
</div>
</div>


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[[File:Dead Reckoning Unwanted movements will be detected by the IMU.png|thumb|left|280px|link=Special:Redirect/file/Dead Reckoning Unwanted movements will be detected by the IMU.png|Unwanted movements will be detected by the IMU]]
[[File:Dead Reckoning Unwanted movements will be detected by the IMU.png|thumb|left|280px|link=Special:Redirect/file/Dead Reckoning Unwanted movements will be detected by the IMU.png|Unwanted movements will be detected by the IMU]]
[[File:Dead Reckoning Metal parts above the mount.png|thumb|left|300px|link=Special:Redirect/file/Dead Reckoning Metal parts above the mount.png|Metal parts above the mount]]
[[File:Dead Reckoning Metal parts above the mount.png|thumb|left|300px|link=Special:Redirect/file/Dead Reckoning Metal parts above the mount.png|Metal parts above the mount]]
[[File:Dead Reckoning vibration could cause unwanted device movements.png|thumb|left|300px|link=Special:Redirect/file/:Dead Reckoning vibration could cause unwanted device movements.png|Places, where vibration could cause unwanted device movements]]
[[File:Dead Reckoning vibration could cause unwanted device movements.png|thumb|left|300px|link=Special:Redirect/file/Dead Reckoning vibration could cause unwanted device movements.png|Places, where vibration could cause unwanted device movements]]
</div>
</div>


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</td>
</td>
<td style="vertical-align: middle; horizontal-align: center; min-width: 150px; border-bottom: 3px solid #336699;">
<td style="vertical-align: middle; horizontal-align: center; min-width: 150px; border-bottom: 3px solid #336699;">
*Ignition is ON.<br>
*Configured '''Ignition source''' is on.<br>
*Movement is detected.<br>
*Movement is detected by the configured '''Movement source.<br>
{{#if: {{FTX Pin Support List|model={{{model}}}|pin=DIN1}} | *DIN1 is activated }} {{#if: {{FTX Pin Support List|model={{{model}}}|pin=DIN2}} | *DIN2 is activated }} {{#if: {{FTX Pin Support List|model={{{model}}}|pin=DIN3}} | *DIN3 is activated }}
{{#if: {{FTX Pin Support List|model={{{model}}}|pin=DIN1}} | *DIN1 is activated }} {{#if: {{FTX Pin Support List|model={{{model}}}|pin=DIN2}} | *DIN2 is activated }} {{#if: {{FTX Pin Support List|model={{{model}}}|pin=DIN3}} | *DIN3 is activated }}
*Periodic wake-up (if enabled).<br></td>
*Periodic wake-up (if enabled).<br></td>
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</td>
</td>
<td style="vertical-align: middle; horizontal-align: center; min-width: 150px; border-bottom: 3px solid #336699;">
<td style="vertical-align: middle; horizontal-align: center; min-width: 150px; border-bottom: 3px solid #336699;">
*Ignition is ON.
*Configured '''Ignition source''' is on.<br>
*Movement is detected.
*Movement is detected by the configured '''Movement source.<br>
*Periodic wake-up (if enabled).
*Periodic wake-up (if enabled).
</td>
</td>
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*No open Data sockets (ignored with enabled permanent link)<br>
*No open Data sockets (ignored with enabled permanent link)<br>
*No active FOTA WEB connection progress.
*No active FOTA WEB connection progress.
{{#if: {{FTX Pin Support List|model={{{model}}}|pin=DIN1}} | *DIN1 is deactivated }} {{#if: {{FTX Pin Support List|model={{{model}}}|pin=DIN2}} | *DIN2 is deactivated }} {{#if: {{FTX Pin Support List|model={{{model}}}|pin=DIN3}} | *DIN3 is deactivated }}
*No signal is detected on Digital Input 1
</td>
</td>
<td style="vertical-align: middle; horizontal-align: center; min-width: 150px; border-bottom: 3px solid #336699;">
<td style="vertical-align: middle; horizontal-align: center; min-width: 150px; border-bottom: 3px solid #336699;">
*Ignition is ON.
*Movement detected by the accelerometer.
*Movement is detected.
*Signal detected on Digital Input 1
{{#if: {{FTX Pin Support List|model={{{model}}}|pin=DIN1}} | *DIN1 is activated }} {{#if: {{FTX Pin Support List|model={{{model}}}|pin=DIN2}} | *DIN2 is activated }} {{#if: {{FTX Pin Support List|model={{{model}}}|pin=DIN3}} | *DIN3 is activated }}
'''Note:''' In Power Off Sleep mode, the main application is not running. Ignition and Movement sources are not monitored and cannot trigger a wake-up event.
</td>
</td>
<td style="vertical-align: middle; horizontal-align: center; min-width: 100px; border-bottom: 3px solid #336699;">  
<td style="vertical-align: middle; horizontal-align: center; min-width: 100px; border-bottom: 3px solid #336699;">  

Latest revision as of 15:43, 9 June 2026