GPS module for Netduino Plus 2 [closed]

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I am working with the Netduino plus 2 which runs off the .NET micro framework. The board has worked well for all my applications.

Recently, I integrated GPS capability to the board using a 20 Channel EM-406A SiRF III Receiver with Antenna GPS module capable of communicating over a serial interface.

However, I am not able to obtain a fix indoors. Obtaining a fix indoors is important to me even if it takes the GPS module 30 mins to obtain a fix. I am getting GPS data through the serial interface just fine. I understand that getting a GPS fix is not easy indoors and GPS satellite signals are weak but, I do know that there are GPS module that can obtain a fix indoors even though they take several minutes to obtain that fix. Does anyone have any suggestions?

Thanks in advance.

Cheers,

Subbu

Answer 1

This has to do with the sensitivity of the GPS receiver being used as well as the gain of the antenna used with the latter item most likely to be the most critical here. Antenna design is a non-trivial issue and due to the fact that GPS signals will easily be attenuated when having to travel through any material at all, then this is not something you might be able to resolve using off the shelf parts without the assistance of an RF engineer.