RFSOLUTIONS GPS-41SMD Fast-acquisition enhanced-sensitivity 12-channel smd gps receiver module Datasheet

GPS-41SMDR
GPS-41SMDF
Embedded GPS Module
GPS-41SMD
Fast-Acquisition Enhanced-Sensitivity
12-Channel SMD GPS Receiver Module
The GPS-41SMD is a miniature 12-channel OEM GPS
receiver module. It is optimized for high-performance,
FEATURES
ease-of-use, flexibility, and low-cost. The GPS receiver is
12 parallel channel GPS receiver
suitable for a wide range of navigation and tracking
4000+ correlators
applications.
SBAS (WAAS, EGNOS) support
Supports active and passive antenna
High Sensitivity:
-137dBm acquisition sensitivity
-147dBm tracking sensitivity
Fast Acquisition:
< 5 second hot start
satellite signal acquisition and short start-up time. Acquisition
sensitivity of –137dBm and tracking sensitivity of –147dBm
offers good performance even under difficult environments.
The GPS-41SMD provides one 3.3V UART serial I/O and one
< 50 second cold start
GPIO pins. Self-contained LNA supports direct connection to
5m CEP accuracy
Low Power Consumption, < 100mW
Small Size, 22.4 x 17.0 x 3.3 mm
12 parallel channels and 4000+ correlators provide fast
passive or active antenna.
Sub-100mW power consumption makes the GPS-41SMD
ideal for battery-operated portable devices.
Satellite-based augmentation systems, such as WAAS and
EGNOS, are supported to yield improved accuracy.
Small size and SMD mounting allow standard SMT assembly
process, making it ideal for high volume production.
Ordering Information
Part Number
Description
GPS-41SMDR
Embedded GPS Module, 12 Channel
GPS-41SMDF
Embedded GPS Module, 12 Channel, Programmable
GPSANT-MMCX
GPS Antenna with MMCX Connection
DS-41SMD-2 June ’06
©2006 RF Solutions Ltd, www.rfsolutions.co.uk
Tel 01273 898000 Fax 01273 480661
Page 1
GPS-41SMDR
GPS-41SMDF
Embedded GPS Module
TECHNICAL SPECIFICATIONS
Receiver Type
12 parallel channel, L1 C/A code
Accuracy
Position
Velocity
1PPS Timing
Startup Time
< 5sec hot start
< 35sec warm start
< 50sec cold start
Signal Reacquisition
1s
Sensitivity
-137dBm acquisition
-147dBm tracking
Update Rate
1Hz
Dynamics
4G (39.2m/sec2)
Operational Limits
Altitude < 18,000m or velocity < 515m/s
(COCOM limit, either may be exceeded but not both)
Serial Interface
LVTTL level
Protocol
NMEA-0183 V3.01
GPGGA, GPGLL, GPGSA, GPGSV, GPRMC, GPVTG, GPZDA
4800 baud, 8, N, 1
Datum
Default WGS-84
Input Voltage
3.3V DC +/-10%
Power Consumption
< 100mW
Dimension
22.4mm L x 17.0mm W x 3.3mm H
Weight:
2g
Operating Temperature
-40oC ~ +85oC
Humidity
5% ~ 95%
DS-41SMD-2 June ’06
5m CEP
0.1m/sec
+/- 1uS
©2006 RF Solutions Ltd, www.rfsolutions.co.uk
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GPS-41SMDR
GPS-41SMDF
Embedded GPS Module
BLOCK DIAGRAM
DS-41SMD-2 June ’06
©2006 RF Solutions Ltd, www.rfsolutions.co.uk
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GPS-41SMDR
GPS-41SMDF
Embedded GPS Module
PINOUT DESCRIPTION
Pin Number
Signal Name
I/O
Description
1
2
3
4
5
6
7
8
9
10
11
NC
NC
TXD0
RXD0
NC
DVCC
GND
NC
NC
RESETN
VCC BAT
O
I
I
-
12
13
14
15
16
17
18
19
20
21
22
23
24
25
NC
RF GND
RF GND
RF GND
RF IN
RF GND
VCC RF
VCC ANT
NC
NC
NC
NC
BAUD SEL0
BAUD SEL1
I
I
I
No connection
No connection
3.3V LVTTL async serial output, to output NMEA message
3.3V LVTTL async serial input, to input binary commands
No connection
Regulated 3.3V supply input for digital section
Ground
No connection
No connection
Manual reset input, active LOW. Leave open if not used.
2.0V ~ 3.9V supply voltage to sustain RTC and SRAM data. Connect to
GND if not used; will cold start every time.
No conection
RF ground
RF ground
RF ground
GPS signal input. 50Ω impedance.
RF ground
Regulated 3.3V supply voltage for the RF section
Power input for active antenna. Leave open if not used.
No connection
No connection
No connection
No connection
Baud rate selection 0
Baud rate selection 1
BAUDSEL[1:0] 00
01
10
11
4800 baud
9600 baud
19200 baud
38400 baud
O
3.3V GPIO, default used for GPS status indication
27
GPIO11
(LED)
NC
-
No connection
28
P1PPS
O
1 pulse per second time mark
26
1PPS Output
The GPS receiver is in navigation mode upon power-up, with 1PPS output free running. After 3 minutes of valid
position fix and remaining under static-mode, the receiver changes to timing-mode, with 1PPS output signal
synchronized to the UTC second. The receiver will change to navigation-mode, with 1PPS output free running,
if the receiver is in motion. The 1PPS output will become synchronized to the UTC second again after the
receiver had remained in static mode for 3 minutes.
DS-41SMD-2 June ’06
©2006 RF Solutions Ltd, www.rfsolutions.co.uk
Tel 01273 898000 Fax 01273 480661
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GPS-41SMDR
GPS-41SMDF
Embedded GPS Module
MODULE DIMENSIONS
RECOMMENDED PAD LAYOUT
DS-41SMD-2 June ’06
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GPS-41SMDR
GPS-41SMDF
Embedded GPS Module
ACTIVE ANTENNA APPLICATION
DS-41SMD-2 June ’06
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GPS-41SMDR
GPS-41SMDF
Embedded GPS Module
PATCH ANTENNA APPLICATION
DS-41SMD-2 June ’06
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GPS-41SMDR
GPS-41SMDF
Embedded GPS Module
NMEA Messages
The serial interface protocol is based on the National Marine Electronics Association’s NMEA 0183 ASCII
interface specification. This standard is fully define in “NMEA 0183, Version 3.01” The standard may be
obtained from NMEA, www.nmea.org
GGA - GPS FIX DATA
Time, position and position-fix related data (number of satellites in use, HDOP, etc.).
Format:
$GPGGA,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,M,<10>,M,<11>,<12>,*<13><CR><LF>
Example:
$GPGGA,104549.04,2447.2038,N,12100.4990,E,1,06,01.7,00078.8,M,0016.3,M,,*5C<CR><LF>
Field
1
2
3
4
5
6
7
8
9
10
11
12
13
Example
Description
104549.04 UTC time in hhmmss.ss format, 000000.00 ~ 235959.99
2447.2038 Latitude in ddmm.mmmm format
Leading zeros transmitted
N
Latitude hemisphere indicator, ‘N’ = North, ‘S’ = South
12100.4990 Longitude in dddmm.mmmm format
Leading zeros transmitted
E
Longitude hemisphere indicator, 'E' = East, 'W' = West
1
Position fix quality indicator
0: position fix unavailable
1: valid position fix, SPS mode
2: valid position fix, differential GPS mode
06
Number of satellites in use, 00 ~ 12
01.7
Horizontal dilution of precision, 00.0 ~ 99.9
00078.8 Antenna height above/below mean sea level, -9999.9 ~ 17999.9
0016.3
Geoidal height, -999.9 ~ 9999.9
Age of DGPS data since last valid RTCM transmission in xxx format (seconds)
NULL when DGPS not used
Differential reference station ID, 0000 ~ 1023
NULL when DGPS not used
5C
Checksum
Note: The checksum field starts with a ‘*’ and consists of 2 characters representing a hex number. The
checksum is the exclusive OR of all characters between ‘$’ and ‘*’.
DS-41SMD-2 June ’06
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GPS-41SMDR
GPS-41SMDF
Embedded GPS Module
GLL - LATITUDE AND LONGITUDE, WITH TIME OF POSITION FIX AND STATUS
Latitude and longitude of current position, time, and status.
Format:
$GPGLL,<1>,<2>,<3>,<4>,<5>,<6>,<7>*<8><CR><LF>
Example:
$GPGLL,2447.2073,N,12100.5022,E,104548.04,A,A*65<CR><LF>
Field
1
2
3
4
5
6
7
8
Example
Description
2447.2073 Latitude in ddmm.mmmm format
Leading zeros transmitted
N
Latitude hemisphere indicator, ‘N’ = North, ‘S’ = South
12100.5022 Longitude in dddmm.mmmm format
Leading zeros transmitted
E
Longitude hemisphere indicator, 'E' = East, 'W' = West
104548.04 UTC time in hhmmss.ss format, 000000.00 ~ 235959.99
A
Status, ‘A’ = valid position, ‘V’ = navigation receiver warning
A
Mode indicator
‘N’ = Data invalid
‘A’ = Autonomous
‘D’ = Differential
‘E’ = Estimated
65
Checksum
GSA - GPS DOP AND ACTIVE SATELLITES
GPS receiver operating mode, satellites used for navigation, and DOP values.
Format:
$GPGSA,<1>,<2>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<4>,<5>,<6>*<7><CR><LF>
Example:
$GPGSA,A,3,26,21,,,09,17,,,,,,,10.8,02.1,10.6*07<CR><LF>
Field
Example
Description
1
A
Mode, ‘M’ = Manual, ‘A’ = Automatic
2
3
Fix type, 1 = not available, 2 = 2D fix, 3 = 3D fix
3
26,21,,,09,17,,,,,, PRN number, 01 to 32, of satellite used in solution, up to 12 transmitted
4
10.8
Position dilution of precision, 00.0 to 99.9
5
02.1
Horizontal dilution of precision, 00.0 to 99.9
6
10.6
Vertical dilution of precision, 00.0 to 99.9
7
07
Checksum
DS-41SMD-2 June ’06
©2006 RF Solutions Ltd, www.rfsolutions.co.uk
Tel 01273 898000 Fax 01273 480661
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GPS-41SMDR
GPS-41SMDF
Embedded GPS Module
GSV - GPS SATELLITE IN VIEW
Number of satellites in view, PRN number, elevation angle, azimuth angle, and C/No. Only up to four satellite
details are transmitted per message. Additional satellite in view information is sent in subsequent GSV
messages.
Format:
$GPGSV,<1>,<2>,<3>,<4>,<5>,<6>,<7>,…,<4>,<5>,<6>,<7> *<8><CR><LF>
Example:
$GPGSV,2,1,08,26,50,016,40,09,50,173,39,21,43,316,38,17,41,144,42*7C<CR><LF>
$GPGSV,2,2,08,29,38,029,37,10,27,082,32,18,22,309,24,24,09,145,*7B<CR><LF>
Field
1
2
3
4
5
6
7
Example
2
1
08
26
50
016
40
8
7C
Description
Total number of GSV messages to be transmitted
Number of current GSV message
Total number of satellites in view, 00 ~ 12
Satellite PRN number, GPS: 01 ~ 32, SBAS: 33 ~ 64 (33 = PRN120)
Satellite elevation number, 00 ~ 90 degrees
Satellite azimuth angle, 000 ~ 359 degrees
C/No, 00 ~ 99 dB
Null when not tracking
Checksum
RMC - RECOMMENDED MINIMUM SPECIFIC GPS/TRANSIT DATA
Time, date, position, course and speed data.
Format:
$GPRMC,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,<10>,<11>,<12>*<13><CR><LF>
Example:
$GPRMC,104549.04,A,2447.2038,N,12100.4990,E,016.0,221.0,250304,003.3,W,A*22<CR><LF>
1
2
3
Field
Example
104549.04
A
2447.2038
4
5
N
12100.4990
6
7
8
9
10
11
12
E
016.0
221.0
250304
003.3
W
A
13
22
DS-41SMD-2 June ’06
Description
UTC time in hhmmss.ss format, 000000.00 ~ 235959.99
Status, ‘V’ = navigation receiver warning, ‘A’ = valid position
Latitude in dddmm.mmmm format
Leading zeros transmitted
Latitude hemisphere indicator, ‘N’ = North, ‘S’ = South
Longitude in dddmm.mmmm format
Leading zeros transmitted
Longitude hemisphere indicator, 'E' = East, 'W' = West
Speed over ground, 000.0 ~ 999.9 knots
Course over ground, 000.0 ~ 359.9 degrees
UTC date of position fix, ddmmyy format
Magnetic variation, 000.0 ~ 180.0 degrees
Magnetic variation direction, ‘E’ = East, ‘W’ = West
Mode indicator
‘N’ = Data invalid
‘A’ = Autonomous
‘D’ = Differential
‘E’ = Estimated
Checksum
©2006 RF Solutions Ltd, www.rfsolutions.co.uk
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GPS-41SMDR
GPS-41SMDF
Embedded GPS Module
VTG - COURSE OVER GROUND AND GROUND SPEED
Velocity is given as course over ground (COG) and speed over ground (SOG).
Format:
GPVTG,<1>,T,<2>,M,<3>,N,<4>,K,<5>*<6><CR><LF>
Example:
$GPVTG,221.0,T,224.3,M,016.0,N,0029.6,K,A*1F<CR><LF>
Field
1
2
3
4
5
Example
221.0
224.3
016.0
0029.6
A
6
1F
Description
True course over ground, 000.0 ~ 359.9 degrees
Magnetic course over ground, 000.0 ~ 359.9 degrees
Speed over ground, 000.0 ~ 999.9 knots
Speed over ground, 0000.0 ~ 1800.0 kilometers per hour
Mode indicator
‘N’ = Data invalid
‘A’ = Autonomous
‘D’ = Differential
‘E’ = Estimated
Checksum
ZDA TIME AND DATE
Format:
$GPZDA,<1>,<2>,<3>,<4>,<5>,<6>*<7><CR><LF>
Example:
$GPZDA,104548.04,25,03,2004,,*6C<CR><LF>
Field
1
2
3
4
5
Example
104548.04
25
03
2004
6
7
6C
Description
UTC time in hhmmss.ss format, 000000.00 ~ 235959.99
UTC time: day (01 ... 31)
UTC time: month (01 ... 12)
UTC time: year (4 digit year)
Local zone hour
Not being output by the receiver (NULL)
Local zone minutes
Not being output by the receiver (NULL)
Checksum
Binary Messages
See Binary Message Protocol User’s Guide, DS-41COM for detailed descriptions.
RF Solutions Ltd.,
Unit 21, Cliffe Industrial Estate,
South Street, Lewes, E Sussex, BN8 6JL. England
Tel +44 (0)1273 898 000
Fax +44 (0)1273 480 661
Email [email protected]
DS-41SMD-2 June ’06
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©2006 RF Solutions Ltd, www.rfsolutions.co.uk
Tel 01273 898000 Fax 01273 480661
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