4.13. Why does the GPS module take so long to fix inside building? I thought it has -165dBm sensitivity?
Even though GlobalTop GPS module is able to obtain -165dBm of sensitivity, please beware that this sensitivity is labeled as “tracking sensitivity”; or the sensitivity when GPS module has already successfully established a position fix.
You can test this by placing the GPS module nearby an open window until it has obtained a position fix, and then slowly move it away from the window. You should find that the GPS module will still be able to report a position even by then.
Also, your system and housing design will inevitably affect/degrade the GPS reception.
Sub Navigation
- 4.1. Is there a design guide available?
- 4.2. Why does it take so long for my GPS module to obtain position fix?
- 4.3. Help! Why is the GPS reception sensitivity so low on my design?
- 4.4. Help! Why won't my module turn on?
- 4.5. What is the purpose of having damping resistors placed near UART terminals?
- 4.6. What is the purpose of having VBackup (or backup power) connected?
- 4.7. Does GlobalTop GPS module provides sub-meter accuracy GPS? How do I increase the accuracy?
- 4.8. For the integrated USB I/O port, which operating system is supported by GlobalTop?
- 4.9. What differentiate between Cold Start, Warm Start and Hot Start?
- 4.10. Is it possible to put the GPS module to sleep via software command?
- 4.11. Help! My GPS module died after powering on and off, what can I do?
- 4.12. What is the high and low voltage level for the GPIO ports (3D-Fix, 1PPS) in MT3329 GPS modules?
- 4.13. Why does the GPS module take so long to fix inside building? I thought it has -165dBm sensitivity?
- 4.14. I see that some model of GPS module has a SPI port, can I use this to receive NMEA?
Contact Us
GlobalTop Technology Inc.
No. 16, Nan-Ke 9th Road, Science-Based Industrial Park, Tainan 741, Taiwan
TEL: +886-6-5051268
FAX: +886-6-5053381
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