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D Logs Summary
MiLLennium GPSCard SW Version 4.503/4.52 Command Descriptions Manual Rev 2 203
Table D-7 Channel Tracking Status
Table D-7 is referenced by the ETSA/B, FRMA/B, RGEA/B/D and WRCA/B logs.
Table D-7, Bits 0 - 3: Channel Tracking State
Table D-7, Bits 12-14: Correlator Spacing
State Description State Description
0 L1 Idle 6 L1 Steering
1 L1 Sky search 7 L1 Frequency-lock loop
2 L1 Wide frequency band pull-in 8 L2 Idle
3 L1 Narrow frequency band pull-in 9 L2 P-code alignment
4 L1 Phase-lock loop 10 L2 Search
5 L1 Re-acquisition 11 L2 Phase-lock loop
Higher numbers are reserved for future use
State Description
0 Unknown: this only appears in versions of software previous to x.45, which didn’t use this field
1 Standard correlator: spacing = 1 chip
2 Narrow Correlator tracking technology: spacing < 1 chip
Higher numbers are reserved for future use
N 7 N 6 N 5 N 4 N 3 N 2 N 1 N 0 <- <- Nibble Number
31 30 29 28 27 26 25
2
4
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit Description Range Values Hex.
lsb = 0 1
1 Tracking state 0 - 11 See below 2
2 4
3 8
4 10
5
0 - n (0 = first, n =
last)
20
6 SV channel number (n depends on GPSCard) 40
7 80
8 100
9 Phase lock flag 1 = Lock, 0 = Not locked 200
10 Parity known flag
1 = Known, 0 = Not
known
400
11 Code locked flag 1 = Lock, 0 = Not locked 800
12 1000
13 Correlator spacing 0 - 7 See below 2000
14 4000
15
0=GPS 3= Pseudolite
GPS
8000
16 Satellite system
1=GLONASS 4-7
Reser ved
10000
17 2=WAAS 20000
18 Reserved 40000
19 Grouping
1 = Grouped, 0 = Not
grouped
80000
20 Frequency 1 = L2, 0 = L1 100000
21 Code type
0 = C/A 2 = P-
codeless
200000
22 1 = P 3 = Reserved 400000
23 Forward error correction
1 = FEC enabled, 0 = no
FEC
800000
24
: Reserved
29
30 External range
1 = Ext. range, 0 = Int.
range
31 Channel assignment
1 = Forced, 0 =
Automatic
*
* Grouped: A channel has an associated channel (L1/L2 pairs in MiLLennium and L1/L1 pairs in Beeline)