GPS-41ML

GPS Receiver Module GPS-41MLR GPS-41MLF GPS-41ML Fast Acquisition Enhanced Sensitivity 12 Channel GPS Sensor Module The GPS-41ML is a compact all-in-one GPS module solution intended for a broad range of Original Equipment Manufacturer (OEM) products, where fast and easy system integration and minimal development risk is required. The receiver continuously tracks all satellites in view and provides accurate satellite positioning data. The GPS-41ML is optimized for applications requiring good performance, low cost, and maximum flexibility; suitable for a wide range of OEM configurations including handhelds, sensors, asset tracking, PDA-centric personal navigation system, and vehicle navigation products. Its 12 parallel channels and 4100 search bins provide fast satellite signal acquisition and short startup time. Acquisition sensitivity of –140dBm and tracking sensitivity of –150dBm offers good navigation performance even in urban canyons having limited sky view. Satellite-based augmentation systems, such as WAAS and EGNOS, are supported to yield improved accuracy. Both the LVTTL-level and RS232-level serial interface are provided on the interface connector. Supply voltage of 3.8V~8.0V is supported. The GPS-41MLF module has programmable flash memory. This enables users to modify the NMEA sentence configuration and re-flash the firmware in the modem. FEATURES 12 parallel channel GPS receiver 4100 simultaneous time-frequency search bins SBAS (WAAS, EGNOS) support High Sensitivity: -140dBm acquisition sensitivity -150dBm tracking sensitivity Fast Acquisition: < 10 second hot start < 50 second cold start 5m CEP accuracy ‘F’ Module Programmable Ordering Information Part Number GPS-41MLR GPS-41MLF Description GPS Module, Onboard Antenna GPS Module, Onboard Antenna, Programmable DS-41ML-1 Feb ’06 ©2006 RF Solutions Ltd, www.rfsolutions.co.uk Tel 01273 898000 Fax 01273 480661 Page 1 GPS Receiver Module TECHNICAL SPECIFICATIONS Receiver Type Accuracy 12 parallel channel, L1 C/A code Position Velocity 5m CEP 0.1m/sec GPS-41MLR GPS-41MLF Startup Time < 10sec hot start < 35sec warm start < 50sec cold start 1s -140dBm acquisition -150dBm tracking 1Hz 4G (39.2m/sec2) Altitude < 18,000m or velocity < 515m/s (COCOM limit, either may be exceeded but not both) LVTTL level and RS-232 level NMEA-0183 V3.01 GPGGA, GPGLL, GPGSA, GPGSV, GPRMC, GPVTG, GPZDA 4800 baud, 8, N, 1 Default WGS-84 User definable Two 1.0mm pitch WTB S/R wafer 87213 SMT R/A type connector 3.8V ~ 8.0V 110mW 34mm L x 34mm W x 8.6mm H 14g -40oC ~ +85oC 5% ~ 95% Signal Reacquisition Sensitivity Update Rate Dynamics Operational Limits Serial Interface Protocol Datum Interface Connector Input Voltage Power Consumption Dimension Weight: Operating Temperature Humidity DS-41ML-1 Feb ’06 ©2006 RF Solutions Ltd, www.rfsolutions.co.uk Tel 01273 898000 Fax 01273 480661 Page 2 GPS Receiver Module GPS-41MLR GPS-41MLF Lateral View PINOUT DESCRIPTION Pin Number 1 2 3 4 5 6 Signal Name Serial Data Out 1 Serial Data In 1 Serial Data Out 2 Serial Data In 2 Power Ground Description Asynchronous serial output at LVTTL level, to output NMEA message Asynchronous serial input at LVTTL level, to input configuration commands Asynchronous serial output at RS-232 level, to output NMEA message Asynchronous serial input at RS-232 level, to input configuration commands 3.8V ~ 8.0V DC input Power and signal ground Please note: The onboard rechargeable Lithium battery may require an initial charge time of approximately 8hrs. DS-41ML-1 Feb ’06 ©2006 RF Solutions Ltd, www.rfsolutions.co.uk Tel 01273 898000 Fax 01273 480661 Page 3 GPS Receiver Module NMEA Messages GPS-41MLR GPS-41MLF 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,,,,,,,,,,M,,M,,,* Example: $GPGGA,104549.04,2447.2038,N,12100.4990,E,1,06,01.7,00078.8,M,0016.3,M,,*5C Field 1 2 3 4 5 6 7 8 9 10 11 12 13 Example Description 104549.04 UTC time in hhmmss.ss format, 000000.00 ~ 235959.99 2447.2038 Latitude in ddmm.mmmm format Leading zeros transmitted N Latitude hemisphere indicator, ‘N’ = North, ‘S’ = South 12100.4990 Longitude in dddmm.mmmm format Leading zeros transmitted E Longitude hemisphere indicator, 'E' = East, 'W' = West 1 Position fix quality indicator 0: position fix unavailable 1: valid position fix, SPS mode 2: valid position fix, differential GPS mode 06 Number of satellites in use, 00 ~ 12 01.7 Horizontal dilution of precision, 00.0 ~ 99.9 00078.8 Antenna height above/below mean sea level, -9999.9 ~ 17999.9 0016.3 Geoidal height, -999.9 ~ 9999.9 Age of DGPS data since last valid RTCM transmission in xxx format (seconds) NULL when DGPS not used Differential reference station ID, 0000 ~ 1023 NULL when DGPS not used 5C Checksum Note: The checksum field starts with a ‘*’ and consists of 2 characters representing a hex number. The checksum is the exclusive OR of all characters between ‘$’ and ‘*’. DS-41ML-1 Feb ’06 ©2006 RF Solutions Ltd, www.rfsolutions.co.uk Tel 01273 898000 Fax 01273 480661 Page 4 GPS Receiver Module GLL - LATITUDE AND LONGITUDE, WITH TIME OF POSITION FIX AND STATUS Latitude and longitude of current position, time, and status. Format: $GPGLL,,,,,,,* Example: $GPGLL,2447.2073,N,12100.5022,E,104548.04,A,A*65 GPS-41MLR GPS-41MLF 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,,,,,,,,,,,,,,,,,* Example: $GPGSA,A,3,26,21,,,09,17,,,,,,,10.8,02.1,10.6*07 Field Example 1 A 2 3 3 26,21,,,09,17,,,,,, 4 10.8 5 02.1 6 10.6 7 07 Description Mode, ‘M’ = Manual, ‘A’ = Automatic Fix type, 1 = not available, 2 = 2D fix, 3 = 3D fix PRN number, 01 to 32, of satellite used in solution, up to 12 transmitted Position dilution of precision, 00.0 to 99.9 Horizontal dilution of precision, 00.0 to 99.9 Vertical dilution of precision, 00.0 to 99.9 Checksum DS-41ML-1 Feb ’06 ©2006 RF Solutions Ltd, www.rfsolutions.co.uk Tel 01273 898000 Fax 01273 480661 Page 5 GPS Receiver Module GPS-41MLR GPS-41MLF 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,,,,,,,,…,,,, * Example: $GPGSV,2,1,08,26,50,016,40,09,50,173,39,21,43,316,38,17,41,144,42*7C $GPGSV,2,2,08,29,38,029,37,10,27,082,32,18,22,309,24,24,09,145,*7B Field 1 2 3 4 5 6 7 8 Example 2 1 08 26 50 016 40 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 - RECOMMANDED MINIMUM SPECIFIC GPS/TRANSIT DATA Time, date, position, course and speed data. Format: $GPRMC,,,,,,,,,,,,* Example: $GPRMC,104549.04,A,2447.2038,N,12100.4990,E,016.0,221.0,250304,003.3,W,A*22 Field 1 2 3 4 5 6 7 8 9 10 11 12 Example 104549.04 A 2447.2038 N 12100.4990 E 016.0 221.0 250304 003.3 W A 13 DS-41ML-1 Feb ’06 22 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 Tel 01273 898000 Fax 01273 480661 Page 6 GPS Receiver Module VTG - COURSE OVER GROUND AND GROUND SPEED Velocity is given as course over ground (COG) and speed over ground (SOG). Format: GPVTG,,T,,M,,N,,K,* Example: $GPVTG,221.0,T,224.3,M,016.0,N,0029.6,K,A*1F GPS-41MLR GPS-41MLF 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,,,,,,* Example: $GPZDA,104548.04,25,03,2004,,*6C Field 1 2 3 4 5 6 7 Example 104548.04 25 03 2004 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 Please refer to DS-41COM, Binary Message Protocol Guide for detailed descriptions on configuration of the NMEA string. DS-41ML-1 Feb ’06 ©2006 RF Solutions Ltd, www.rfsolutions.co.uk Tel 01273 898000 Fax 01273 480661 Page 7 GPS Receiver Module GPS-41MLR GPS-41MLF 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 sales@rfsolutions.co.uk http://www.rfsolutions.co.uk DS-41ML-1 Feb ’06 ©2006 RF Solutions Ltd, www.rfsolutions.co.uk Tel 01273 898000 Fax 01273 480661 Page 8