Lla Navigation Initialization - RoyalTek REB-3000 Operational Manual

RoyalTek RGM-3000/REB-3000
GPS Module Operational Manual)
Table 12 Query/Rate Control Data
Format(See example 1.)
1.Quety the GGA message with checksum
enabled: $PSRF103,00,01,00,01*25
2.Enable VTG message for a 1 Hz
constant output with checksum enabled:
Table 12 Query/Rate Control Data Format(See example 1.)
Name
Message ID
Message
Mode
Rate
Cksum Enable
Checksum
<CR><LF>
Table 13 Messages
Value
0
1
2
3
4
5

LLA Navigation Initialization

This command is used to initialize the
module for a warm start , by providing
current position(in latitude, longitude, and
altitude coordinates), clock offset, and time.
This enables the receiver to search for the
correct satellite signals at the correct signal
Table 14 LLA Navigation Initialization Data Format
Name
Message ID $PSRF104
Lat 37.3875111
Lon -121.97232
Alt
CLK Offset
Time Of Week
Week No
Channel Count
Reset Cfg
Checksum
<CR><LF>
Use 0 for last saved value if available. If this is unavailable, a default value of 96,000 will be used.
Table 15 Reset Configuration
Hex
0x01
0x02
Example Units
$PSRF103
00
01
00 seconds
01
*25
Example Units
Degrees
Degrees
0 Meters
95000 Hz
237759 Seconds
922
12
3
*3A
Data Valid – Warm /Hot Starts=1
Clear Ephemeris – Warm Start=1
$PSRF103,05,00,01,01*20
3.Disable VTG message
$PSRF103,05,00,00,01*21
Description
PSRF102 protocol header
See Table 13
0=Set Rate, 1=Query
Output – off=0,max=255
0=Disable Checksum, 1=Enable Checksum
End of message termination
Description
GGA
GLL
GSA
GSV
RMC
VTG
parameters . Correct initialization
parameters enable the receiver to acquire
signals quickly.
Table 14 contains the input values for the
following example: Start using known
position and time $PSRF104, 37.3875111,
-121.97232, 0, 95000, 237759, 922, 12,
3*3A
Description
PSRF104 protocol header
Latitude position (Range 90 to –90)
Longitude position (Range 180 to –180)
Altitude position
Clock Offset of the Evaluation Unit 1
GPS Time Of Week
GPS Week Number
Range 1 to 12
See Table 15
End of message termination
Description
18