GT-87 GNSS Module

Furuno | GNSS Timing Module
Furuno Multi-GNSS GT-87 Receiver Module
High sensitivity and high accuracy timing Multi-GNSS Receiver Module
  • The GT-87 is the high-sensitivity, high-accuracy Timing Multi-GNSS receiver.
  • The GT-87 supports TRAIM and various position modes, allowing it to output accurate and robust 1PPS synchronized to UTC time.
  • The GT-87 supports GPS, GLONASS, QZSS, SBAS, Active Anti-Jamming and Advanced Multipath Mitigation Functions.

Features

  • Multi-GNSS, Concurrent reception of GPS and GLONASS
  • Simultaneous output of time pulse (1PPS) and low jitter clock (configurable, e.g. 10MHz) synchronized with the 1PPS
  • Enable to output accurate and robust UTC time and 1PPS synchronized with UTC time
  • Suitable for system synchronization with low jitter clock in addition to high accuracy time pulse
  • One satellite tracking is enough to output precise 1PPS (Position Hold Mode)
  • Selectable Position Mode based on use case
  • TRAIM function detects low-integrity satellite and satellite not to use for positioning
  • Improved Noise Tolerance
  • Reduces effects of internal and external noise
  • Embedded Flash ROM
  • Suitable for long-term use backed by FURUNO’s continuous support and function enhancement

Specification

GNSS Reception Capability

  • GPS L1 C/A,
  • GLONASS L1OF
  • QZSS L1 C/A
  • SBAS L1 C/A
  • Galileo E1B/E1C,
  • QZSS L1S

GNSS Reception

  • 26 channels (GPS, GLONASS, QZSS, SBAS)
Update Rate 1Hz

Sensitivity

GPS:

  • Tracking: -161 dBm
  • Hot Start: -161 dBm
  • Warm Start: -147 dBm
  • Cold Start: -147 dBm
  • Reacquisition: -161 dBm

GLONASS:

  • Tracking: -157 dBm
  • Hot Start: -157 dBm
  • Warm Start: -143 dBm
  • Cold Start: -143 dBm
  • Reacquisition: -157 dBm

 

  • *Measurement platform with recommended active antenna

Position Accuracy (Horizontal)

  • GPS:2.5m(CEP)
  • GPS+SBAS:2.0m(CEP)
  • GPS+SBAS+GLONASS:2.0m(CEP)
 
*Measurement platform with recommended active antenna

1PPS Timing Accuracy

  • 15ns(1σ) (@-130 dBm)
  • 50ns(1σ) (@-150 dBm)

Clock Configurable Range

  • 4 KHz to 40 MHz

TTFF (Typical)

  • Hot Start: <5 sec (@-130 dBm)
  • Warm Start: 35 sec (@-130 dBm)
  • Cold Start: 40 sec (@-130 dBm)
 
*Measurement platform with recommended active antenna

Supply Voltage

  • 3.3VDC

Power Consumption

  • Acquisition Mode: 72 mA

Backup Supply

  • 1.4 to 3.6VDC / 10μA (Typ)

Operating Temperature

  • -40°C to +85°C

Package

  • 24Pin LCC (Leadless Chip Carrier)
  • 12.2mm×16.0mm×2.8mm

Protocol

  • eSIP (NMEA 0183 Standard Ver 4.10)
  • M12 Binary
Interfaces
  • UART, I2C, Time Pulse (1PPS), Clock

Anti-Jamming

  • Available

Multipath Mitigation

  • Available

 

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