Confidential
USERS MANUAL
99(158)
Document number
Revision
1/198 17-4/FCP 101 3045 Uen
D
Parameter
Description
1
Include REF_PN & MOB_SYS_T_OFFSET
<SV_PRN_NUM>
Satellite PRN number
1 to 37
Fie–d is set to the value of the PRN signal number for which the
measured data is valid, where the binary value of the field conveys the
satellite PRN number minus one.
<SV_CNO>
Satellite C/N0
1 to 63
Field is set to the value of the satellite C/N0, as referenced to the
antenna connector, in unit of 1dB-Hz.
<PS_DOPPLER>
Measured frequency of satellite signal relative to local oscillator of the
mobile
-32768 to 32767
Field is set to the measured satellite pseudodoppler, in units of 0.2 Hz in
the range of -6553.6 to 6553.4
<SV_CODE_PH_WH>
Satellite code phase –whole chip
0 to 1022
Field is set to the satellite code phase measured as a number of GPS
chips, in units of 1 GPS chips
<SV_CODE_PH_FR>
Satellite code phase – fractional chip
0 to 1023
Field is set to the residual satellite code phase, in units of the integer
representation of 1/(2^10) of GPS chips.
<MUL_PATH_IND>
Multipath indicator
0 Not
specified
1
Error <= 5m
2
5m < Error <= 43m
3
Error > 43m
<PS_RANGE_RMS_ER>
Pseudorange RMS error
0x00 to 0x3F
A floating point representation is used where the 3 most significant bits
constitute the exponent and the 3 least significant bits constitute the
mantissa as specified in the following table:
Exponent x
mantissa y
pseudorange value
000 000 0.5
000 001 0.5625
X
Y
0.5(1 + Y/8)(2^X)
111 110 112
111 111 not
applicable
4.13.4.1
*EPDPR (Request Pseudorange Measurement)
This unsolicited message is sent from the CM52 to the external GPS application when it receives an IS-801
message Request Pseudorange Measurement from the base station.
Upon receiving this unsolicited message, the external GPS processor should provide the Pseudorange
measurement data (AT*EPDPR).
Description
Unsolicited Response Syntax
Request
measurement
*EPDPR: <PREF_RESP_QUAL>
Parameter
Description
<PREF_RESP_QUAL>
Time before response element should be sent