SIM28 GPS Module / Modem with GPS antenna
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Introduction
The GPS smart receiver features the 16 channels .Ultra low power GPS architecture. This complete enabled GPS receiver provides high position, velocity and time accuracy performances as well as high sensitivity and tracking capabilities.
Feature
· 6-channels GPS search engine
· ‹ Ultra low power design (38mA, typical)
· ‹ Compact size
· ‹ Built-in low noise, high gain active antenna
· ‹ Super-cohesive magnetic for installation
· ‹ High sensitivity (up to -152dBm typ)
· ‹ Apply to host devices with USB or RS232
Technical specification
· Operating voltage: 12v dc.
· Compatible with TTL & serial.
· Frequency l1, 1575.42mhz
· C/a code 1.023mhz chip rate
· channel 16 channels all in view
NMEA Protocol
The software is capable of supporting the following NMEA message formats
NMEA Message Prefix
Format
$GPGGA
GPS fix data
$GPGLL
Geographic position Latitude / Longitude.
$GPGSA
GNSS DOP and actives satellites
$GPGSV
Satellites in view.
$GPRMC
Recommended minimum specific GNSS data.
$GPVTG
Velocity and track over ground
$GPZDA
Date and time
GPS Antenna
Antenna is critical item for successful GPS reception in weak signal environment. So here we use the active antenna type using SMA connector.
Pin Description
Pin Number
Pin Name
Description
1
5V
Vcc Supply Voltage
2
GND
Ground Pin
3
VDD
3.3v
4
TX
Serial output pin
5
RX
Serial input pin
6
GND
Ground Pin
Applications
· Automotive
· Personal/Portable Navigation (PDA)
· Geographic Surveying
· Sports and Recreation etc.