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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.tw
All Right Reserved
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GPS-22 Operating Manual Rikaline TABLE OF CONTENTS ………………………………………………………………………….………… 1. Introduction 3 1.1 Overview ………………………………………………………………………………………. 3 1.2 Features ……………………………………………………………………………….………. 3 1.3 FirstGPS Architecture Highlights …………………………………………………………… 3 1.4 Application …………………………………………………………………………………….. 3 1.3 Technology specifications ………………………………………………………………….… 3 ………………………………………………………………. 2. Operational Characteristic 5 2.1
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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, integrat
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GPS-22 Operating Manual Rikaline 1.24”(W) x 1.05”(D) x 0.44”(H) 2. Weight: 25 g ™ 1.5.2 Environmental Characteristics o o 1) Operating temperature: -40 C to +85 C (internal temperature) o o 2) Storage temperature: -55 C to +100 C 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). 1.5.4 Functional Block Diagram
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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 chann
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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 NAME TYPE DESCRIPTION 1 GND Power and Signal Ground 2 ON/OFF I ON / Off command line 3 VCC 3.0 to 3.6 Volts DC Input Power Supply 4 USPED I 9600/4800 Bd UART Speed 5 RXA I Serial Receive Data, P
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GPS-22 Operating Manual Rikaline 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
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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). 4.1 NMEA Transmitted Messages The GPS-22 outputs data in NMEA-0183 format
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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 Units Description Message ID $GPGLL GLL protocol header Latitude 3723.2475 ddmm.mmmm N/S Indicator N N=north or S=south Longitude 12158.3416 dddmm.mmmm E/W Indicator W E=east or W=west UTC Position 161229.487 hhmmss.
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GPS-22 Operating Manual Rikaline Name ExampleUnits Description Message ID $GPGSV GSV protocol header Number of Messages 2 Range 1 to 3 Message Number 1 Range 1 to 3 Satellites in View 07 Range 1 to 12 Satellite ID 07 Channel 1 (Range 1 to 32) Elevation 79 degrees Channel 1 (Maximum 90) Azimuth 048 degrees Channel 1 (True, Range 0 to 359) SNR (C/No) 42 dBHz Range 0 to 99, null when not tracking .... .... Satellite ID 27 Channel 4 (Range 1 to 32) Elevation 27
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GPS-22 Operating Manual Rikaline Checksum *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 ExampleUnits Description Message ID $GPZDA ZDA protocol header Hour, Min, Sec, Sub 114523.62 Hhmmss.ss Sec Day 12 Day in UTC, 01to 1
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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 ‘*’. • QUER
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GPS-22 Operating Manual Rikaline GLL 1 0002 VTG 2 0004 GSV 3 0008 GSA 4 0010 ZDA 5 0020 RMC 8 0100 TF 9 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. $PXEMaPS,x*hh Name Example Units Description Message ID $PXEMaPS Proprietary PS protocol
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GPS-22 Operating Manual Rikaline 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 (
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GPS-22 Operating Manual Rikaline 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=6.5 Elevation Mask (in degrees) 5 SVs for which elevation is lower are ignored to compute the solution 2 SVs for which signal strength is lower are Signal Level Mask (AMU) ignored to compute the solution DOP Mask 12 Max Dilution Of Precision to accept t
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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. Warranty The GPS-2
