GPS RECEIVE SENSITIVITY MEASURING METHOD AND A MOBILE COMMUNICATION TERMINAL HAVING A GPS RECEIVE SENSITIVITY MEASURING FUNCTION, PARTICULARLY CONCERNED IN MEASURING A RECEIVE SENSITIVITY PERFORMANCE OF A GPS FUNCTION WITHIN A SHIELDED ROOM INSTEAD OF A SUBSTANTIAL FIELD

摘要

Purpose: a GPS receives sensitivity measuring method, if having the function of that a mobile communication terminal of a GPS receives sensitivity measure and is arranged to AGC (automatic growth control) amplifier for being embedded in a terminal using one, to which one GPS power levels of prediction receive within a screened room, PDM (pulse density modulated) value of another DM (diagnostic monitor) with terminal will not be connected. Construction: in a GPS modes (S401), a terminal operation. After terminal is placed in a screened room, the mounted place of a strip antenna corresponding with a base station antenna, terminal is rotated at predetermined angular (S402). (S403) is stored according to an AGC PDM value changes of a GPS signals. One mean value of the value that AGC PDM are obtained by rotation terminal is calculated (S404). The mean value of the calculating of PDM values judges that a GPS receives susceptibility (S405) compared with a reference value.