Novatel OM-20000041 用户手册

D

Logs summary

MiLLennium GPSCard Software Version 4.50 Command Descriptions Manual Rev 1

199

1

When an external oscillator is connected and the OCXOPLL bit passes self-test, the bit will be set to 1.

0

If no external oscillator is detected or a fault is detected in the OCXOPLL bit, this bit is set to 0.

1

When the almanac received is newer than the one currently stored in NVM (non-volatile memory), the

 bit will be set to 1.

0

This bit will be set to 0 if an almanac has not been received that is newer than the one stored in memory.

1

No almanac in use

0

Valid almanac in use

1

Position solution is not valid

0

Valid position computed

1

A fix position command has been accepted

0

Position has not been fixed

1

Clock model has not stabilized

0

Clock model is valid

1

Clockadjust disable command has been accepted

0

Clockadjust is enabled

Notes on Table D-6: 

1A

Only PRNs 1 - 63 are reported correctly (Note: while there are only 32 PRNs in the basic GPS scheme,

situations exist which require the use of additional PRNs)

1B

The prn offsets for WAAS have been mapped to the same range as GPS, ie. 1 - 19, while the prn offsets
for GLONASS are 1 - 29.

2

C/No is constrained to a value between 20 - 51 dB-Hz. Thus, if it is reported that C/No = 20 dB-Hz, the

actual value could be less. Likewise, if it is reported that C/No = 51 dB-Hz, the true value could be greater.

3

Lock time rolls over after 2,097,151 seconds.

PRN  

1A, 1B

0..5

6

integer

1

C/No

 

2

6..10

5

integer

(20+n) dB-Hz

Lock time

 

3

11.31

21

integer

1/32 s

ADR  

4

 

32..63

32

integer 2’s comp.

1/256 cycles

Doppler frequency

68..95

28

integer 2’s comp.

1/256 Hz

Pseudorange

 

64..67 msn; 96..127 lsw

36

integer 2’s comp.

1/128 m

StdDev - ADR

 

128..131

4

integer 

(n+1) / 512  cyc

StdDev - pseudorange

132..135

4

see 

5

Channel Tracking status 

6

136..159

24

integer