Rikaline GPS-22 GPS Receiver Module User’s Guide FirstGPS V1.0 Jun 28, 2003 Positioning Accuracy: 3m CEP (50%) or <5m CEP ((90%) Low Power: 17mA typical -- tracking at 3.3 Volts, full power Rikaline International Corp. 14F, 171, ChengGong Rd., Sanchong City, Taipei 241, Taiwan, R.O.C Phone: +886-2-8973-1899 Fax: +886-2-8973-1896 E-Mail: info@rikaline.com.tw Web: www.rikaline.com.
GPS-22 Operating Manual Rikaline TABLE OF CONTENTS 1. Introduction ………………………………………………………………………….………… 3 3 3 3 3 3 1.1 Overview ………………………………………………………………………………………. 1.2 Features ……………………………………………………………………………….………. 1.3 FirstGPS Architecture Highlights …………………………………………………………… 1.4 Application …………………………………………………………………………………….. 1.3 Technology specifications ………………………………………………………………….… 2. Operational Characteristic ………………………………………………………………. 5 5 5 2.1 Initialization …………………………………………………………………………………… 2.
GPS-22 Operating Manual Rikaline 1. Introduction 1.1 Overview The Rikaline GPS-22 GPS Receiver is a GPS receiver featuring the revolutionary FirstGPS™ architecture. This complete enabled GPS receiver module provides high position and speed accuracy performances as well as high sensitivity and tracking capabilities in urban canyon conditions. The solution enables small form factor package. The GPS-22 delivers major advancements in GPS performances, accuracy, integration, computing power and flexibility.
Rikaline GPS-22 Operating Manual 1.24”(W) x 1.05”(D) x 0.44”(H) 2. Weight: 25 g is the trademark from Trimble Remark: FirstGPS™ 1.5.2 Environmental Characteristics 1) Operating temperature: -40oC to +85oC (internal temperature) 2) Storage temperature: -55oC to +100oC 1.5.3 Electrical Characteristics 1) Input voltage: +3.0 ~ 3.65 VDC. 2) HFL antenna connector: Active or patch (3.0V antenna is recommended). 1.5.
GPS-22 Operating Manual Rikaline 2. Operational characteristics 2.1 Initialization As soon as the initial self-test is complete, the GPS-22 begins the process of satellite acquisition and tracking automatically. Under normal circumstances, it takes approximately 120 seconds to achieve a position fix, 42 seconds if ephemeris data is known. After a position fix has been calculated, information about valid position, velocity and time is transmitted over the output channel.
GPS-22 Operating Manual Rikaline 3. Hardware interface 3.1 Physical Characters 1. Size: 31.59(W) x 26.59(D) x 11.20(H) (mm) 1.24”(W) x 1.05”(D) x 0.44”(H) 2. Weight: 25 g 3.1.1 Details Drawing 3.2 Pin Definition PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 NAME GND ON/OFF VCC USPED RXA VRTCBK TXA PPS GND RESETN ALMRDY STY1 STY0 OSCSTOPN TYPE I I I O O I DESCRIPTION Power and Signal Ground ON / Off command line 3.0 to 3.
Rikaline GPS-22 Operating Manual 1) All I/Os on the Data Interface are related to VCC (3 to 3.6 Volts) and GND levels. 2) ON/OFF: control the GPS engine “ON” or “OFF”. If this pin is pulled “HIGH” whenever a reset condition occurs or if it is turned “HIGH” during operating, the GPS engine is turned “ON”. If this pin is pulled “LOW” whenever a reset condition occurs, the GPS engine is not started. If this pin is turned “LOW” when in operating, the GPS engine is turned “OFF”.
GPS-22 Operating Manual Rikaline 4. Software Interface The GPS-22 interface protocol is based on the National Marine Electronics Association's NMEA 0183 ASC Ⅱ interface specification, which is defined in NMEA 0183, Version 2.1 and the Radio Technical Commission for Maritime Services (RTCM Recommended Standards For Differential Navstar GPS Service, Version 2.1, RTCM Special Committee No.104). 4.
GPS-22 Operating Manual Rikaline 4.1.2 Geographic Position with Latitude/Longitude (GLL) Table 4-4 contains the values for the following example: $GPGLL,3723.2475,N,12158.3416,W,161229.487,A*2C Table 4-4 GLL Data Format Name Example Message ID $GPGLL Latitude 3723.2475 N/S Indicator N Longitude 12158.3416 E/W Indicator W UTC Position 161229.487 Status A Checksum *2C Units Description GLL protocol header ddmm.mmmm N=north or S=south dddmm.mmmm E=east or W=west hhmmss.
GPS-22 Operating Manual Name Example Message ID $GPGSV Number of Messages 2 Message Number 1 Satellites in View 07 Satellite ID 07 Elevation 79 Azimuth 048 SNR (C/No) 42 .... ....
GPS-22 Operating Manual Checksum Rikaline *6E End of message termination (1) All “course over ground” data are geodetic WGS84 directions. 4.1.7 Time & Date (ZDA) Table 4-11 contains the values for the following example: $GPVTG,114523.62,12,04,2001,10,34*6E Table 4-11 ZDA Data Format Name Example Message ID $GPZDA Hour, Min, Sec, Sub 114523.62 Sec Day 12 Month 04 Year 2001 Local Zone Hours 10 Local Zone Minutes 34 Checksum *6E Units Description ZDA protocol header Hhmmss.
GPS-22 Operating Manual Rikaline $PXEMmaa,x1,x2,x3,x4,….,xN*hh where m – sentence type: ‘Q’ for ‘query’, ‘S’ for ‘set’, ‘R’ for ‘response’; aa – proprietary sentence identifier (see below); x1…xN – data parameters (only for set and query response sentences); hh – sentence checksum NOTE: Each of the data parameters must be preceded with a comma, except for the aa sentence identifier, and the checksum which is preceded with a checksum delimiter character ‘*’.
GPS-22 Operating Manual GLL VTG GSV GSA ZDA RMC TF 1 2 3 4 5 8 9 Rikaline 0002 0004 0008 0010 0020 0100 0200 Example: $PXEMSNM,0008,01*6E (set) $PXEMSNM,a*6E (response to set: a – action status: A = success; V=failure) 4.3.2.4 PS – Pulse-Per-Second Configuration This sentence sets the pulse-per-second (PPS) output on or off. This is a set-only sentence.
Rikaline GPS-22 Operating Manual TM S = start the FirstGPS library TM X = shut down the FirstGPS library End of message termination Example: $PXEMSRT,W*6E (set) $PXEMSRT,a*6E (response to set: a – action status: A = success; V=failure) 4.3.2.7 VR – Version Information (optional) TM This sentence obtains software versions for the measurement platform (MPM) firmware, FirstGPS API, TM FirstGPS Library, native RTOS, and native processor (CPU). This is a query-only sentence.
Rikaline GPS-22 Operating Manual Dynamics Code Automobile DGPS Mode DGPS Off Max Oscillator Offset 6.5e-6 Limit the search range during cold start. Must be larger than TCXO tolerance+stability+aging, for ex. 1+2.5+3=6.
GPS-22 Operating Manual Rikaline 5. Earth Datums 5.1 Earth Datums The GPS-22 is built in earth datum with WGS84. 6. Ordering Information 6.1 Products Options 6.1.1 GPS Receiver Module GPS-22 Standard with 50mm flat 16-pin Cable 6.2 Accessories A-10302 MCX, Active Antenna, 2M A-10305 MCX, Active Antenna, 5M 56501 Connecting Cable, Screw type MCX + HFL connector + 15mm cable. 7.
