I am a Chinese student studying GNSS at University of Colorado at Boulder. GNSS caught my eyes initially through its application in car navigation system. Believing that the civilian applications of GNSS will have promising future, I started my research journey of GNSS in Japan and now continue it in US.

I personally believe that students in the fi eld of GNSS will have a great career in future no matter in academia or industry. The GNSS applications, from personal navigation in cell phones to precise applications in precise agriculture and seismic monitoring have enormous industrial values and attract interests from both government and private companies.Besides, the family of GNSS is growing that Europe is building the Galileo Navigation Satellite System, and China will implement the Beidou (Compass) Navigation Satellite System. The science and engineering of GNSS is becoming a world wide hot topic, as a student in this domain, I am very confident about its future and my own.
The challenges of the GNSS technology are how to increase the sensitivity and accuracy of the GNSS receiver without largely increasing the cost or introducing any latency. In future, the cooperation of GPS, Galileo, GLONASS and even Beidou could bring more visible satellites to the user, thus the dilution of precision will be greatly improved.

The indoor navigation or GNSS navigation under urban environment are also the challenging parts for the GNSS scientists and engineers.

http://www.mycoordinates.org/jan09/voice2.php#xia