How to find the Signal Strength for GPS?

I am a newbie for wavecom. I want to know how to get signal strength for GPS. It is possible for GSM with “AT+CIND” command. But i dont know for GPS.
Pls tell me is there any AT commands or ADL to get the signal strength for GPS. I want to display the GPS signal strength in my LCD display.
Could some one help me out? Really its very urgent…