Navika-200

17x22mm2 GPS-SBAS Module
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Features
  • 17mm x 22.4mm module form-factor
  • GPS-SBAS positioning module
  • More than 16K Correlators for fast acquisition and robust tracking
  • Fast Time-To-First-Fix
  • Precise 1PPS output with configurable pulse characteristics
  • Single 3.3V input supply
  • Edge half-PTH connection points for easy assembly
  • NMEA0183 compatible message format and Custom binary message for host communication
Navika-200
Product Description

Navika-200 is a L1, C/A code based GPS-SBAS receiver module. Its superior acquisition and tracking sensitivity ensures continuous location availability under poor visibility conditions and even indoors.

With a form-factor of 17mm x 22.4mm, Navika-200 lends itself for integration into applications with severe space constraints.

Navika-200 supports sub-second positioning in hot start and reacquisition while providing faster location under warm and cold start modes too.

Navika-200 can be interfaced to either active or passive GPS antenna.

For applications that demand precise time synchronization, Navika-200 provides an accurate time pulse with associated GPS / UTC time stamping.

The module provides several standard interfaces such as SPI port, UART port and a full-speed USB port that enable the module to be interfaced in a variety of ways to the outside world. The module also supports four general purpose I/Os that can be used to drive LEDs or digital input-output ports.

Navika-200 supports NMEA-0183 message protocol to communicate the location information. In addition, Accord proprietary messages convey additional information for a tighter integration with the end application.

Navika-200 Module Details  

The Navika-200 brings out some of the essential peripherals for host interface such as SPI port, UART port, USB port and GPIOs.

The Navika-200 is targeted for applications that require positioning and/or timing outputs. In addition to the user co-ordinates, Navika-200 is capable of delivering unmatched timing accuracy. Typical applications where Navika-200 could be integrated are

  • Vehicle tracking
  • Security
  • Geo-tagging
  • Wireless base-stations
The Navika-200 is a 17mmx22.4mm sized GPS module. It requires a single 3.3V supply and a 3.0V battery feed that would enable the user to fully exploit all its features.

The module has been designed keeping all components on one side of the PCB and provides half plated through holes (PTH) on two sides for electrical and mechanical connectivity.

The connection details and the mechanical information are provided below.

Navika-200 Connection Diagram  

In order to build a complete GPS receiver using the module, all it takes are a few connections. The diagram below depicts the interconnections to be done in order to use the Navika-200.

  • Connect a 50Ω trace between the RF_IN pad and the antenna connector
  • Connect a 20Ω, 1Ω resistor between the ANT_SENSE and ANT_VCC_3V pads. This is required to sense a short circuit on the antenna power line as well as to protect the power-ground short circuit
  • An active low power ON reset of at least 25ms should be provided on the /RESET pad
  • The host communication can be tapped at the UART_RXD and UART_TXD lines
  • Mains power of 3.3V +/- 5% should be applied at DVCC_3V3 pad. The maximum current draw of the board would be about 50mA (excluding antenna current). It is recommended to mount a decoupling capacitor of 1uF close to the DVCC_3V3 pad
  • A backup battery of 3.0V should be applied at VBAT_3V0 pad. The recharge circuitry (in case of a rechargeable battery) should be provisioned on the motherboard


  • Specifications of Navika-200 Module  
    Performance Characteristics
    Receiver 16 channels L1-C/A code GPS-SBAS
     
    Sensitivity
    Acquisition
    -155dBm (Hot start, 1SV @ -140dBm)
    -160dBm (Reacquisition)
    Tracking -162dBm
     
    Time To First Fix
    Hot Start(with valid ephemeris, almanac, position and time estimate) 2 sec (typical) switch OFF/ON cycle less than 1 hour
    Warm Start(with almanac, position and time estimate) 30 sec (typical)
    Cold Start (without almanac, time, or position) 35 sec (typical)
     
    Accuracy
    Position (Horizontal) 10 m (90% without S/A)
    Velocity 0.1 m/sec (90% without S/A)
     
    Reacquisition
    Signal < 1 sec
    Position < 1 sec
    Blockage Time 3 minutes
     
    Navigation Solution
    PVT 2D/3D position, velocity, and time 183 geodetic datum supported (default) (WGS84)
    Position Update Rate 1 Hz
     
    Timing
    1PPS < +/- 10ns, 1s without errors
    Pulse Width 400us (adjustable between 400us to 39.6ms in steps of 400us)
    Pulse Edge Rising (configurable)
    Pulse Delay 0ns (adjustable between 999 to +999ns)
     
    Single Satellite PPS
    Min. C/N0 12dB-Hz (adjustable between 12dB-Hz and 60dB-Hz; default is 35dB-Hz)
    Min. Elevation Mask 7 deg
    Position averaging 50s minimum, extends upto 1000s
    Validity of 1PPS 6 hours continuously in single satellite PPS mode
     
    PC/Host Communication
    Interface UART
    Baud Rate 115200
    Message Formats NMEA0183 Ver. 3.01 ASCII, as well as proprietary messages
     
    Environmental Characteristics
    Operational Temperature Range (Ambient) -40C to +85C
    Storage Temperature Range -65C to +150C
    Humidity 95% non-condensing +30C to 60C
    itude 18,000 meters
     
    Electrical Characteristics
    Total Current Consumption 50mA @ 3.3V
    GPS MIPS on ARM 25
     
    Output Messages
    NMEA $GPGGA, $GPGSA, $GPRMC, $GPGLL, $GPGSV, $GPVTG, $GPZDA
    ASCII Version, Kalman Filter, Receiver Configuration, Antenna Status, PPS mode
     
    Input Messages
    ASCII NMEA message control and configuration, Elevation mask, DOP settings, Factory reset, Restart, 1PPS configuration
     
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