# SkyLogger application field test
Source: [https://docs.qualcomm.com/doc/80-42221-1/topic/skylogger-app-field-test.html](https://docs.qualcomm.com/doc/80-42221-1/topic/skylogger-app-field-test.html)
The SkyLogger application must have access to device location and storage
permissions.
Before performing the field test, configure the device and verify the activation code.
## Best practices
Source: [https://docs.qualcomm.com/doc/80-42221-1/topic/skylogger-app-field-test.html](https://docs.qualcomm.com/doc/80-42221-1/topic/skylogger-app-field-test.html)
Consider the following key points to have efficient and accurate test results while recording the
sessions:
- Walk in straight-line segments at a slow and steady pace for walking surveys.
- The user must record the survey with the device in hand and line of sight (LoS) to the beacon.
- Don't survey with the device in backpack, pocket, and so on.
- If possible, survey each line segment from both directions.
- Survey the perimeter of all rooms and the middle of large open areas.
- If surveying an environment with many outside ambient beacon signals within the venue, it's
recommended to use beacon whitelist/blacklist features.
- If whitelist/blacklist features aren't used in the survey, a negative survey is valuable outside
the perimeter of the venue.
## Record a session
Source: [https://docs.qualcomm.com/doc/80-42221-1/topic/skylogger-app-field-test.html](https://docs.qualcomm.com/doc/80-42221-1/topic/skylogger-app-field-test.html)
The SkyLogger application allows the user to map the location and record the logs.
### Configure the SkyLogger application
Source: [https://docs.qualcomm.com/doc/80-42221-1/topic/skylogger-app-field-test.html](https://docs.qualcomm.com/doc/80-42221-1/topic/skylogger-app-field-test.html)
### About this task
To configure the SkyLogger application to collect survey logs, do the following:
### Procedure
1. In the test device, open SkyLogger application.
2. In Select Venue, select the venue from the
drop-down.
3. In Select Configuration, select Survey - Data
Collection or Test - Global (as
applicable).
### Results
The device is now configured to perform the field tests.
## Mark ground truth
Source: [https://docs.qualcomm.com/doc/80-42221-1/topic/skylogger-app-field-test.html](https://docs.qualcomm.com/doc/80-42221-1/topic/skylogger-app-field-test.html)
Marking ground truth sets the current location to record the session.
### About this task
To mark the ground truth, do the following:
### Procedure
1. In the test device, open SkyLogger application.
2. At the top-left corner of the screen, tap Start.
3. At bottom of the screen, tap GPS to center the map to
current location.
4. (Optional) Tap Toggle map to switch between roadmap view
and satellite view.
5. (Optional) Tap Layer to toggle indoor map.
6. Tap Mark ground truth to set the location.
7. Adjust Yellow cross hair to mark ground truth for
precise location.
8. Tap Thumb up to confirm the position.
### Results
After marking the ground truth
to the intended location, ready to start record message appears at the bottom of the
application to record stationary survey or walking survey.
## Perform stationary survey
Source: [https://docs.qualcomm.com/doc/80-42221-1/topic/skylogger-app-field-test.html](https://docs.qualcomm.com/doc/80-42221-1/topic/skylogger-app-field-test.html)
A stationary survey collects the location details of a fixed indoor
location.
### Before you begin
Before starting a stationary survey, mark the ground truth and confirm the
location.
### About this task
To start a stationary survey, do the following:
Note: Don't move the device while
performing the stationary survey.
### Procedure
1. At the bottom of the screen, tap Stationary survey to
start recording the stationary test.
2. After 60 seconds, tap Stop at the top-right corner of
the screen to stop the session.
3. Move the device to a different location.
4. Repeat the steps from marking the ground
truth to record a session.
Note: While performing the stationary survey test, don't move the
device.
### Results
After recoding the session, the Process results? message
appears at the bottom of the screen to upload, archive, or delete the recorded
logs.
## Perform walking survey
Source: [https://docs.qualcomm.com/doc/80-42221-1/topic/skylogger-app-field-test.html](https://docs.qualcomm.com/doc/80-42221-1/topic/skylogger-app-field-test.html)
Walking survey collects the location details of the different locations while walking
steadily in a straight path.
### Before you begin
Before starting a walking survey, mark the ground
truth and confirm the location.
### About this task
To start a walking survey, do the following:
### Procedure
1. At the bottom of the screen, tap Walking survey to start
recording the session.
2. Walk steadily towards the next point in a straight path.
3. Tap Mark ground truth to mark the point.
The Continue onto the next point? message appears
at the bottom of the application.
4. Tap Walking survey to continue onto the next
point.
The Walk steadily towards the next point message
appears at the bottom of the application.
5. Repeat the steps from marking the ground
truth to record session for different locations.
6. At the top-right corner of the screen, tap Stop to stop
the recoding the session.
### Results
After recoding the session, the Process results? message
appears at the bottom of the screen to upload, archive, or delete the recorded
logs.
## Process results
Source: [https://docs.qualcomm.com/doc/80-42221-1/topic/skylogger-app-field-test.html](https://docs.qualcomm.com/doc/80-42221-1/topic/skylogger-app-field-test.html)
In the Process Results tab, session logs can be uploaded,
archived, or deleted.
### Before you begin
Record a session before processing results.
### About this task
To process the results, do the following:
### Procedure
- To upload logs to the server, tap Thumb up.
- If the device isn't connect to the Internet while processing the logs, archive
the logs in the device:
1. Tap Archive to save the log file on the
device.
2. Tap Upload to upload log file to the server when
the device is connected to the Internet.
- Tap Discard to delete the session.
## Access log file
Source: [https://docs.qualcomm.com/doc/80-42221-1/topic/skylogger-app-field-test.html](https://docs.qualcomm.com/doc/80-42221-1/topic/skylogger-app-field-test.html)
The SkyLogger application sends the log file automatically for automated accuracy
analysis for each test session. The visualization and CDF analysis for the test sessions are
provided on request.
The logs are available locally in the device SD card
(/sdcard/qualcomm/skylogger.csv) as .csv
file for local analysis or extraction.
The scan creates a CSV file named in the following
format:
Timestamp | Source | Latitude | Longitude | HPECopy to clipboard
The log files in the device is accessed by using the file manager application or adb
command:
adb pull /sdcard/skylogger/skylogger_output.csvCopy to clipboard
### Example log
1609972452995,wps_start,,,
1609972455706,wps,42.3198380,-71.0515800,20
1609972456293,wps,42.3198380,-71.0515800,20
1609972456293,wps,42.3198380,-71.0515800,20
1609972456293,wps,42.3198380,-71.0515800,20
1609972458979,wps,42.3198424,-71.0515518,5
1609972460905,user_start,42.3198501,-71.0513138,0
1609972461586,wps,42.3198424,-71.0515518,15
1609972462360,user_stop,42.3198501,-71.0513138,0
1609972462587,wps,42.3198424,-71.0515518,19
1609972462257,wps,42.3198582,-71.0515576,6
1609972464589,wps,42.3198582,-71.0515576,15
1609972465588,wps,42.3198582,-71.0515576,19
1609972464455,wps,42.3198591,-71.0515536,9
1609972467590,wps,42.3198644,-71.0515470,22
1609972468001,user_start,42.3198310,-71.0513349,0
1609972467582,wps,42.3198594,-71.0515360,5
1609972468814,user_stop,42.3198310,-71.0513349,0
1609972469593,wps,42.3198626,-71.0515391,13
1609972470029,wps_stop,,,Copy to clipboard
| Command | Description |
| --- | --- |
| `wps` | Wi-Fi positioning |
| `xps` | Hybrid positioning |
| `gps` | GNSS positioning |
| `wps_start` | WPS location provider (Wi-Fi/cell) starts tracking
location |
| `wps_stop` | WPS location provider (Wi-Fi/cell) stops tracking
location |
| `xps_start` | Hybrid location provider (Wi-Fi/cell and GNSS) starts tracking
location |
| `xps_stop` | Hybrid location provider (Wi-Fi/cell and GNSS) stops tracking
location |
| `user_start` | Marks the initial location when a user starts a stationary test
recording or a walking test |
| `user_stop` | Stops recording the session |
Last Published: Apr 21, 2026
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