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GPS/GSM Module GE302

Features:

  • SiRF StarIII low power single chipset
  • Compact module size for easy
  • integration : 15 x 14 x 2.8 mm
  • RoHS compliance

1. Introduction
The GE302 module is a high sensitivity, low power and very compact Surface Mount Device (SMD). This 20-channel global positioning system (GPS) receiver is designed for a broad spectrum of OEM applications and is based on the fast and deep GPS signal search capabilities of SiRFStarIII™ low power single chipset architecture.
GE302 is designed to allow quick and easy integration into GPS-related applications, especially for compact size devices, such as:

  • PDA, Pocket PC and other computing devices
  • Fleet Management / Asset Tracking
  • AVL and Location-Based Services
  • Hand-held Device for Personal Positioning and Navigation

1.1. Features
Hardware and Software

  • Based on the high performance features of the SiRF Star III low power single chipset.
  • Compact module size for easy integration: 15x14x2.8 mm (590.6x551.2x110.2 mil).
  • SMT pads allow for fully automatic assembly processes equipment and reflow soldering
  • RoHS compliant (lead-free)

Performance

  • Cold/Warm/Hot Start Time: 42 / 38 / 1 sec.
  • Reacquisition Time: 0.1 second
  • RF Metal Shield for best performance in noisy environments
  • Multi-path Mitigation Hardware

Interface

  • TTL level serial port for GPS communications interface
  • Protocol: NMEA-0183/SiRF Binary (default NMEA)
  • Baud Rate: 4800 ~19200 bps (default 9600)

1.2. Advantages

  • Ideal for compact size devices
  • Data / Power / RF through surface mount pads
  • Cost saving through elimination of RF and board to board digital connectors
  • Flexible and cost effective hardware design for different application requirements
  • Secure SMD PCB mounting method

2. Technical specifications

Hardware Features

  • Based on the high performance features of the SiRF Star III low power single chipset
  • Compact module size for easy integration: 15x14x2.8 mm (590.6x551.2x110.2 mil)
  • SMT pads allow for fully automatic assembly processes equipment and reflow soldering
  • RoHS compliant (lead-free)

2.2. Software Features
The firmware used on GE302 module is GSW3.2.x, the software for SiRF StarIII low
power single chipset receivers, and the default configuration is as following description:

Item Description
Core of firmware SiRF GSW3.2.2
Baud rate 4800 ~19200 bps (default 9600)
Code type NMEA-0183 ASCII
Datum WGS-84
Protocol message GGA, GSA, GSV, RMC,VTG
Output frequency 1 Hz

2.3. Mechanical specification
The Physical dimensions of the GE302 GPS Module are as follow:

Items Description
Length 15.0 ± 0.1 mm (590.6 ± 4 mil)
Width 14.0 ± 0.1 mm (551.2 ± 4 mil)
Height 2.80 ± 0.3 mm (110.2 ± 12 mil)
Weight 1g

2.4. Recommended GPS Antenna Specification
This GE302 receiver is designed for use with passive antenna.

Parameter Specification
Antenna Type Right-hand circular polarized passive antenna
Frequency Range 1575.42 ± 1.023 MHz

2.5. Environmental Specification

Item Description
Operating temperature rang -40 deg. C to +85 deg. C
Storage temperature range -55 deg. C to +100 deg. C
Humidity up to 95% non-condensing or a wet bulb temperature of +35 deg. C
Altitude 18,000 meters (60,000 feet) max.
Velocity 515 meters/second (1000 knots) max.
Jerk 20 meters/second3, max.
Acceleration 4g, max.

2.6. ESD Specification
Air Discharge: 2 ; 4 ; 8KV ( direct )
Contact Discharge: 2 ; 4 KV ( direct / indirect )

2.7. Reference design

  • All ground pads attach directly to ground plane by way of via.
  • All components are reference only.
  • The antenna input should have the proper impedance matching.

Performance Characteristics
2.8. Position and velocity accuracy


Accuracy
Position

10 meters, 2D RMS
5 meters 2D RMS, WAAS corrected
<5meters(50%)

Velocity

0.1 meters/second

Time

1 microsecond synchronized to GPS time

2.9. Dynamic constrains

Dynamic
Conditions
Altitude
18,000 meters (60,000 feet) max.
Velocity
515 meters/second (1000 knots) max.
Acceleration

4g, max.
Jerk
20 meters/second3, max.

2.10. Acquisition time1

Mode
GE302
GPS Module
TTFF Hot
(valid almanac, position, time & ephemeris)
1 s
TTFF Warm
(valid almanac, position, & time)
38 s
TTFF Cold
(valid almanac)
42 s
re-acquisition
(<10 s obstruction with valid almanac, position, time & ephemeris)
100 ms
Note 1: Open Sky and Stationary Environments.