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GPS Receiver MT3318
Figure 1: GPS Receiver MT3318 top and bottom view
Introduction
GPS Receiver MT3318 is based on the MediaTek MTK MT3318 chipset. It has active
patch antenna from Cirocomm. It can track 51 satellites simultaneously. This GPS
receiver gives data output in standard NMEA format with update rate of 1 second at 9600
bps. Receiver has onboard battery for memory backup for quicker acquisition of GPS
satellites. Receiver has 8 pin male berg connector with 2mm pitch. 8 pin female berg
connector comes with this GPS module for external connections.
Note: You may also require general purpose PCB with 2mm pitch for mounting the
receiver on the PCB.
Specifications
• Supply: 3.3V, 45mA
• Chipset: MTK MT3318
• Antenna: High gain GPS patch antenna from Cirocomm
• Data output: CMOS UART interface at 3.3V
• Protocol: NMEA-0183@9600bps (Default) at update rate of 1 second.
• Protocol message support: GGA, GSA, GSV,RMC, VTG
• No. of Satellite simultaneously tracked: 51
• Tracking Sensitivity: On-module antenna : -157 dBm
• Position Accuracy : <3 m
• Max. Update Rate：5Hz (Default: 1 Hz)
• Time to First Fix (Open sky and stationary position)
o Obscuration recovery: 0.1 second average
o Hot start: <1 seconds average
o Warm start: <34 seconds average
o Cold start: <36 seconds average
• Size: 26mm x 26mm x11.7mm
NEX Robotics Pvt. Ltd.
www.nex-robotics.com
GPS Receiver MT3318
1
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Summary of Contents for NEX ROBOTICS MT3318
- Page 1 Figure 1: GPS Receiver MT3318 top and bottom view Introduction GPS Receiver MT3318 is based on the MediaTek MTK MT3318 chipset. It has active patch antenna from Cirocomm. It can track 51 satellites simultaneously. This GPS receiver gives data output in standard NMEA format with update rate of 1 second at 9600 bps.
- Page 2 GPS Receiver MT3318 Kit Contains: • GPS Receiver MT3318 • 8 pin Female berg connector with 2mm pitch • Documentation CD with terminal software from the NEX Robotics and GPS Cockpit NMEA terminal software NEX Robotics Pvt. Ltd. www.nex-robotics.com...
- Page 3 GPS Receiver MT3318 Mechanical Dimension: Figure 2: Mechanical Dimensions Figure 3: Inside view of the GPS receiver NEX Robotics Pvt. Ltd. www.nex-robotics.com...
- Page 4 GPS Receiver MT3318 GPS Receiver MT3318 is also available in the following form factors GPS Receiver MT3318 Module GPS Receiver is soldered on the PCB with 3.3V low drop voltage regulator, 5V to 3.3V logic level converter, LEDs for TX, RX and Power.
- Page 5 GPS Receiver MT3318 Interfacing Microcontroller which is working on 5V with the GPS receiver: Figure 5: GPS interfacing with the microcontroller at 5V logic level In this case microcontroller is working at 5V while GPS receiver is operating at 3.3V.
- Page 6 Following example shows the GPS data acquisition on the PC using terminal software from the NEX Robotics. If you are using Serial terminal from NEX Robotics then follow bellow steps Step1: Install the terminal software from NEX Robotic on the PC which is located in the documentation CD.
- Page 7 GPS Receiver MT3318 Figure 6 shows data when GPS module inside the room. You will not get any data also it will not detect any satellite inside the room. When GPS module outside the room: Figure 7 Figure 7shows data when GPS module outside the room. You will get perfect data in NMEA-0183 format at 9600bps.
- Page 8 GPS Receiver MT3318 You can also use GPS Cockpit software to see GPS Data on PC Figure 8 NEX Robotics Pvt. Ltd. www.nex-robotics.com...
- Page 9 GPS Receiver MT3318 GPS Cockpit software is very easy software for GPS data study. It shows GPS data in different windows. Like you can directly get latitude and longitude on GPS information window, you can also find out distance between two points in survey window. In signal quality window displays the signal to noise ratio or carrier to noise.
- Page 10 GPS Receiver MT3318 NMEA protocol explanation: 1: GPGGA - Global Positioning System Fix Data 2: GPGSA - GPS DOP and active satellites 3: GPGSV - GPS Satellites in view 4: GPRMC: Recommended minimum specific GPS/Transit data 5: GPVTG: Track Made Good and Ground Speed.
- Page 11 GPS Receiver MT3318 M = units of antenna altitude, meters x.x = Geoidal separation M = units of geoidal separation, meters x.x = Age of Differential GPS data (seconds) xxxx = Differential reference station ID eg3. $GPGGA,hhmmss.ss,llll.ll,a,yyyyy.yy,a,x,xx,x.x,x.x,M,x.x,M,x.x,xxxx*hh 1 = UTC of Position...
- Page 12 GPS Receiver MT3318 1 = Total number of messages of this type in this cycle 2 = Message number 3 = Total number of SVs in view 4 = SV PRN number 5 = Elevation in degrees, 90 maximum 6 = Azimuth, degrees from true north, 000 to 359...
- Page 13 GPS Receiver MT3318 6 = E or W 7 = Speed over ground in knots 8 = Track made good in degrees True 9 = UT date 10 = Magnetic variation degrees (Easterly var. subtracts from true course) 11 = E or W...
- Page 14 GPS Receiver MT3318 Content of this manual is released under the Creative Commence cc by-nc-sa license. For legal information refer to: http://creativecommons.org/licenses/by-nc-sa/3.0/legalcode Product’s electronics is static sensitive. Use the product in static free environment. Read the user manuals completely before start using this product Recycling: Almost all the part of this product are recyclable.
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