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http : //www.wenshing.com.tw ; http://www.rf.net.tw gps - 18x19 datasheet p 1 wenshing ?? gps - 18x19 gps module gps ultra high sensitivity module key features ?support gps, qzss, sbas ?signal detection better than - 165dbm ? ultra low power operation ?uart ?open sky hot start 1 second ?open sky cold start 29 seconds ?support 7 - day agps ?embedded patch antenna version history version date changes v1.0 0 september 2, 2013 1 st. edition
http : //www.wenshing.com.tw ; http://www.rf.net.tw gps - 18x19 datasheet p 2 applications lbs (location based service) gps mouse and bluetooth gps receiver v ehicle position tracking a ero model auto - positioning lbs (location based service) gps mouse and bluetooth gps receiver ?v?? ??w? product description gps - 18x19 gps is a satellite positioning module fully integrated with antenna and receiver. it has ultra - high sensitivity and can be applied to various occasions. simplified uart output provides the easiness for engineers to do the designing wo rk. it can be utilized along with plug - in ic regulated power supply module. coming with uart coordinate system, 18x19 gps module output can directly connect to mcu or be used for several applications. gps - 18x19 gps module ????l??M?O? ??? uart ??O??M? ic ?M???^ uart ??? mcu ? pin assignments
http : //www.wenshing.com.tw ; http://www.rf.net.tw gps - 18x19 datasheet p 3 pin function pin name i/o description 1 rxd1 digital i universal asynchronous receiver 2 txd1 digital o universal asynchronous receiver 3 gnd gnd ground. 4 vcc 33 input + 3.3 v to +3.6 v supply voltage input to internal regulators 5 v back input the real - time clock circuitry and a small block of sram is included on - chip to retain time and the necessary gps data for rapid warm start and hot - start operation 5 1pps digital o 1 pulse per second output, 7 time 8 nc 9 nc 10 reset digital input module reset 11 ext ant input external active antenna 12 gnd gnd ground
http : //www.wenshing.com.tw ; http://www.rf.net.tw gps - 18x19 datasheet p 4 hardware specification conditions: vdd =vcc = 3v3 v , vss = 0v, ta = 2 5oc parameter symbol test condition min typ max unit supply voltage range power 3 3 .3 3.6 v current receiver tracking 25 ma technical specifications ? receiver type l1 c/a code, 167 - channel venus 8 engine ? accuracy position 2.5m cep velocity 0.1m/sec time 10ns ? startup time 1 second hot start under open sky 29 second cold start under open sky (average) ? reacquisition 1s ? sensitivity - 165dbm tracking ? multi - path mitigation advanced multi - path detection and suppression ? update rate supports 1 / 2 / 4 / 5 / 8 / 10 / 20 / 40 hz update rate (1hz default) ? dynamics 4g (39.2m/sec 2 ) ? operational limits altitude < 18,000m or velocity < 515m/s ? serial interface 3v ttl level ? protocol nmea - 0183 v3.01 gpgga, gpgll, gpgsa, gpgsv, gprmc, gpvtg *1 9600 baud, 8, n, 1 ? datum default wgs - 84 user definable ? input voltage 3.0v ~ 3.6v dc ? input current ~25ma tracking ? dimension 19 mm l x 18 mm w ? weight: 9g ? operating temperature - 40 o c ~ +85 o c ? storage temperature - 55 ~ +100 o c ? humidity 5% ~ 95%
http : //www.wenshing.com.tw ; http://www.rf.net.tw gps - 18x19 datasheet p 5
http : //www.wenshing.com.tw ; http://www.rf.net.tw gps - 18x19 datasheet p 6 nmeamessages the full descriptions of supported nmea messages are provided at the following paragraphs. gga - global positioning system fix data time, position and fix related data for a gps receiver. structure: $gpgga,hhmmss.sss,ddmm.mmmm,a,dddmm.mmmm,a,x,xx,x.x,x.x,m,,,,xxxx*hh 1 2 3 4 5 6 7 8 9 10 11 example: gpgga,111636.932,2447.0949,n,12100.5223,e,1,11,0.8,118.2,m,,,,0000*02 field name example description 1 utc time 111636.932 utc of position in hhmmss.sss format, (000000.000 ~ 235959.999) 2 latitude 2447.0949 latitude in ddmm.mmmm format leading zeros transmitted 3 n/s indicator n latitude hemisphere indicator, ?n? = north, ?s? = south 4 longitude 12100.5223 longitude in dddmm.mmmm format leading zeros transmitted 5 e/w indicator e longitude hemisphere indicator, 'e' = east, 'w' = west 6 gps quality indicator 1 gps quality indicator 0: position fix unavailable 1: valid position fix, sps mode 2: valid position fix, differential gps mode 3: gps pps mode, fix valid 4: real time kinematic. system used in rtk mode with fixed integers 5: float rtk. satellite system used in rtk mode. floating integers 6: estimated (dead reckoning) mode 7: manual input mode 8: simulator mode 7 satellites used 11 number of satellites in use, (00 ~ 12) 8 hdop 0.8 horizontal dilution of precision, (00.0 ~ 99.9) 9 altitude 108.2 mean sea level (geoid), ( - 9999.9 ~ 17999.9) 10 dgps station id 0000 differential reference station id, 0000 ~ 1023 null when dgps not used 11 checksum 02
http : //www.wenshing.com.tw ; http://www.rf.net.tw gps - 18x19 datasheet p 7 gll ? latitude/longitude latitude and longitude of current position, time, and status. structure: $gpgll,ddmm.mmmm,a,dddmm.mmmm,a,hhmmss.sss,a,a*hh 1 2 3 4 5 6 7 8 example: gpgll,2447.0944,n,12100.5213,e,112609.932,a,a*57 field name example description 1 latitude 2447.0944 latitude in ddmm.mmmm format leading zeros transmitted 2 n/s indicator n latitude hemisphere indicator ?n? = north ?s? = south 3 longitude 12100.5213 longitude in dddmm.mmmm format leading zeros transmitted 4 e/w indicator e longitude hemisphere indicator 'e' = east 'w' = west 5 utc time 112609.932 utc time in hhmmss.sss format (000000.000 ~ 235959.999) 6 status a status, ?a? = data valid, ?v? = data not valid 7 mode indicator a mode indicator ?n? = data not valid ?a? = autonomous mode ?d? = differential mode ?e? = estimated (dead reckoning) mode ?m? = manual input mode ?s? = simulator mode 8 checksum 57
http : //www.wenshing.com.tw ; http://www.rf.net.tw gps - 18x19 datasheet p 8 gsa ? gnss dop and active satellites gps receiver operating mode, satellites used in the navigation solution reported by the gga or gns sentence and dop values. structure: $gpgsa,a,x,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,x.x,x.x,x.x*hh 1 2 3 3 3 3 3 3 3 3 3 3 3 3 4 5 6 7 example: gpgsa,a,3,05,12,21,22,30,09,18,06,14,01,31,,1.2,0.8,0.9*36 field name example description 1 mode a mode ?m? = manual, forced to operate in 2d or 3d mode ?a? = automatic, allowed to automatically switch 2d/3d 2 mode 3 fix type 1 = fix not available 2 = 2d 3 = 3d 3 satellite used 1~12 05,12,21,22,30 ,09,18,06,14,0 1,31,, satellite id number, 01 to 32, of satellite used in solution, up to 12 transmitted 4 pdop 1.2 position dilution of precision (00.0 to 99.9) 5 hdop 0.8 horizontal dilution of precision (00.0 to 99.9) 6 vdop 0.9 vertical dilution of precision (00.0 to 99.9) 7 checksum 36
http : //www.wenshing.com.tw ; http://www.rf.net.tw gps - 18x19 datasheet p 9 gsv ? gnss satellites in view number of satellites (sv) in view, satellite id numbers, elevation, azimuth, and snr value. four satellites maximum per transmission. structure: $gpgsv,x,x,xx,xx,xx,xxx,xx,?,xx,xx,xxx,xx *hh 1 2 3 4 5 6 7 4 5 6 7 8 example: $gpgsv,3,1,12,05,54,069,45,12,44,061,44,21,07,184,46,22,78,289,47*72 $gpgsv,3,2,12,30,65,118,45,09,12,047,37,18,62,157,47,06,08,144,45*7c gpgsv,3,3,12,14,39,330,42,01,06,299,38,31,30,256,44,32,36,320,47*7b field name example description 1 number of message 3 total number of gsv messages to be transmitted (1 - 3) 2 sequence number 1 sequence number of current gsv message 3 satellites in view 12 total number of satellites in view (00 ~ 12) 4 satellite id 05 satellite id number, gps: 01 ~ 32, sbas: 33 ~ 64 (33 = prn120) 5 elevation 54 satellite elevation in degrees, (00 ~ 90) 6 azimuth 069 satellite azimuth angle in degrees, (000 ~ 359 ) 7 snr 45 c/no in db (00 ~ 99) null when not tracking 8 checksum 72
http : //www.wenshing.com.tw ; http://www.rf.net.tw gps - 18x19 datasheet p 10 rmc ? recommended minimum specific gnss data time, date, position, course and speed data provided by a gnss navigation receiver. structure: $gprmc,hhmmss.sss,a,dddmm.mmmm,a,dddmm.mmmm,a,x.x,x.x,ddmmyy,,,a*hh 1 2 3 4 5 6 7 8 9 10 11 example: gprmc,111636.932,a,2447.0949,n,12100.5223,e,000.0,000.0,030407,,,a*61 field name example description 1 utc time 0111636.932 utc time in hhmmss.sss format (000000.00 ~ 235959.999) 2 status a status ?v? = navigation receiver warning ?a? = data valid 3 latitude 2447.0949 latitude in dddmm.mmmm format leading zeros transmitted 4 n/s indicator n latitude hemisphere indicator ?n? = north ?s? = south 5 longitude 12100.5223 longitude in dddmm.mmmm format leading zeros transmitted 6 e/w indicator e longitude hemisphere indicator 'e' = east 'w' = west 7 speed over ground 000.0 speed over ground in knots (000.0 ~ 999.9) 8 course over ground 000.0 course over ground in degrees (000.0 ~ 359.9) 9 utc date 030407 utc date of position fix, ddmmyy format 10 mode indicator a mode indicator ?n? = data not valid ?a? = autonomous mode ?d? = differential mode ?e? = estimated (dead reckoning) mode ?m? = manual input mode ?s? = simulator mode 11 checksum 61
http : //www.wenshing.com.tw ; http://www.rf.net.tw gps - 18x19 datasheet p 11 vtg ? course over ground and ground speed the actual course and speed relative to the ground. structure: gpvtg,x.x,t,,m,x.x,n,x.x,k,a*hh 1 2 3 4 5 example: gpvtg, 000.0,t,,m,000.0,n,0000.0,k,a*3d field name example description 1 course 000.0 true course over ground in degrees (000.0 ~ 359.9) 2 speed 000.0 speed over ground in knots (000.0 ~ 999.9) 3 speed 0000.0 speed over ground in kilometers per hour (0000.0 ~ 1800.0) 4 mode a mode indicator ?n? = not valid ?a? = autonomous mode ?d? = differential mode ?e? = estimated (dead reckoning) mode ?m? = manual input mode ?s? = simulator mode 5 checksum 3d

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