How to identify in the system if a trip has faced GPS loss.

Step 1: Search the trip ID under the "Search by Trip ID" option on the dashboard then click on the "View Route" option as highlighted below:

Step 2: Once the View Route window is open, turn on the "Speed" toggle button as highlighted below for leagcy trip view:

If you land on modern trip view, please switch to the legacy view and then turn on the speed toggle button.

How to identify GPS loss from the health logs:

Step 1: Search the trip ID and then click on the "Tripsheet" hyperlink in blue as given below:

Modern Dashboard View:

Old Dashboard view:

Step 2: Once the tripsheet information is open, you will get an option to view "Device Health" as mentioned below:

Modern Dashboard View:

Old Dashboard View:

Step 3: Once the Device health is open select the time frame of the trip performed (start and end time).

Step 4: Select the check box for time logs where GPS loss was observed and check the below points:

1. Check if "IsGPSOn" is set as true (this indicates if the location service is enabled or disabled in a device).
2. Check if "GPSLocation-Geocordinate" accuracy is less than 50 meters (If the accuracy is not available or equal to or greater than 50 meters then the location is considered as inaccurate or incorrect).
   
   
3. Check if the driver had killed the MoveInSync Driver application while performing the trip as this will affect by not capturing the KMs as the application was not on. If the application is killed for a time duration there will be no time logs present in the "Device Health" and once the application is started you will find a time log printed as "Application started at" as given below:
   

How to solve GPS loss from Billing?

Step 1: On the Dashboard, click on "Billing" and select "Flagged Vehicles (Data incomplete)" as mentioned below:

Step 2: Once the flagged vehicles page opens, select the desired vendor to get the data where a trip had faced GPS loss.

Step 3: Once the data is populated, select trips or select all trips and then click on "Resolve Issues" as given below:

Step 4: Once the "Resolve Issue" button is applied a window will pop up and you can choose the most prefferable option to fix GPS loss and recover lost KMs in the system.

Note: We can even fix the GPS loss issues trips individually by clicking on "Fix" option under the "Action" column and then select the most prefferable option to fix GPS loss.

GPS fluctuations may occur because of the below-mentioned factors:

1. Multipath Interference
Cause: GPS signals can bounce off buildings, mountains, or other structures before reaching the receiver, creating multiple signal paths that confuse the GPS receiver.
Avoidance:
Use GPS devices with advanced algorithms that can filter out multipath signals.
Ensure you are in an open area, free from tall structures, to minimize signal reflection.
2. Atmospheric Conditions
Cause: The ionosphere and troposphere can cause delays in the GPS signals as they pass through these layers. Weather phenomena like heavy rain or solar flares can also impact signal quality.
Avoidance:
Use multi-frequency GPS devices, as they can correct some atmospheric errors.
Avoid using GPS in extreme weather conditions or during solar storms.
3. Satellite Geometry
Cause: The position of GPS satellites in the sky can affect the accuracy of the GPS signal. If the satellites are clustered in one area of the sky, the GPS receiver may have difficulty calculating accurate positions.
Avoidance:
Use devices that can calculate positions using signals from a wider spread of satellites.
Choose times when the GPS satellite constellations are optimally spaced.
4. Obstructions
Cause: Trees, dense foliage, tunnels, and even thick clouds can block or degrade the GPS signal. This is often seen in rural or mountainous areas, or inside buildings.
Avoidance:
Stay in open areas, and avoid dense forests, caves, or indoor environments when precise GPS data is necessary.
5. GPS Receiver Quality
Cause: Lower-quality GPS receivers may not have the sensitivity to capture weak GPS signals, leading to fluctuating or inaccurate results.
Avoidance:
Invest in high-quality, professional-grade GPS equipment if precise accuracy is required.
Ensure the GPS receiver firmware is up to date, as updates may improve performance and accuracy.
6. Signal Blockage
Cause: Buildings, overpasses, or other structures can physically block GPS signals from reaching the receiver, especially in urban canyons or areas with dense infrastructure.
Avoidance:
When possible, navigate in open spaces or on elevated terrains to reduce signal blockages.
Use a GPS device with Assisted GPS (A-GPS) functionality, which can help improve location accuracy in areas with weak signal strength.
7. Satellite Maintenance/Failures
Cause: Occasionally, GPS satellites undergo maintenance or may fail, leading to temporary disruptions in service.
Avoidance:
Check satellite status via GPS service monitoring tools or websites before relying on GPS for critical tasks.
Use multiple navigation systems (e.g., GLONASS, Galileo) to reduce dependence on a single satellite system.
8. Receiver Interference
Cause: Electromagnetic interference (EMI) from nearby devices or electronic equipment can affect the GPS receiver’s performance.
Avoidance:
Keep the GPS device away from strong sources of electromagnetic interference, such as radios, power lines, or Wi-Fi routers.
If necessary, use shielding or specialized equipment designed to reduce interference.
9. Human Error or Incorrect Configuration
Cause: Incorrect settings or user error, such as improperly configured GPS devices or using outdated maps, can also lead to GPS fluctuation.
Avoidance:
Regularly update the GPS software, maps, and firmware.
Double-check settings such as coordinate systems, reference points, and map versions before use.
10. Environmental and Geographical Factors
Cause: The natural environment and geographical location can introduce noise or disturbances in the GPS signal, such as mountainous terrains, dense forests, or near bodies of water.
Avoidance:
Be aware of the specific geographical challenges in your area and plan routes that minimize signal interference.
Consider using alternative navigation methods (like map reading or other location-based services) in challenging environments.