How can I use Assisted GPS for faster first-time fix in my GPS tracking system?
Hi everyone , im working on a gps tracking system for study graduation . I just need a help about using a feature named « Assisted Gps » to get a very fast first time fix . I hope that someone can help me please !
12 Replies
Hello @Sofiane09 Based on my knowledge Assisted GPS (A-GPS) helps your device find its location faster by using info from cell towers or Wi-Fi networks. to use it, make sure your device supports A-GPS, and that it has internet access. You can enable A-GPS in the settings or through your code. Once it’s on, your device will download helpful data to quickly determine its position, even in tricky places like indoors or cities. After that, your GPS will work faster and more reliably.
Yes i know this and i have a gps module and im sure that support A-GPS but i dont know how to use it in my tracking system using esp32 and sim 800l
@Sofiane09 To implement Assisted
GPS (A-GPS) with your ESP32 and SIM800L module,
Ensure the SIM800L is connected to the internet
Download the A-GPS data
Send the A-GPS data to the GPS module
Retrieve and use the GPS dataI know this but the main problem is how to download data and how to send it to gps module ?
can you use
AT commands to send commands from your ESP to your SIM800LYes but its very hard to get and download gps data and to send it i need that someone who have work on this because i have all informations but im looking problems in working
I have 3 gps module
1- beitian be 880
2- quectel l86 and l96
3-ai thinker gps kit 02
Which module is easy and good to get AGPS feature and be the faster to get the TTFF ?
@Sofiane09 I would suggest you use the
Quectel l96 for 3 reasons
1. The L96 supports Assisted GPS, which significantly speeds up the process of acquiring a satellite fix by downloading satellite data over the internet.
2. It offers better sensitivity and lower power consumption compared to the other modules. This means not only a quicker fix but also more reliable operation in challenging environments like urban areas or indoors.
3. The L96 is well-documented, making it easier to integrate into your project. It provides clear instructions for enabling A-GPS, which is crucial for reducing TTFFIoT Modules, IoT Antennas and Certification Services | Quectel
We are a global IoT solutions provider of cellular IoT modules, Wi-Fi/GNSS modules, IoT antennas and IoT device certification services
Then you can implement it using by
- connecting the
L96 to the internet to download A-GPS data using your Apn
- Use the AT command to enable A-GPS on the L96 and let it download the necessary A-GPS data.
- Verify that the L96 has successfully acquired a fix.
after proper setup you should get a result like👇
How can L96 connect to internet ? Its a gps module or a wifi module ?
yea you are right on its own it can't connect to the internet directly. Instead, it relies on a companion module, such as a cellular modem which in your case is the
SIM800L, to download A-GPS data from the internet. This A-GPS data helps the L96 acquire a faster GPS fix by providing the necessary information @Sofiane09