• GNSS for Time Sync
Timing Multi-GNSS Receiver Module

Model GT-88

Extremely high stability of 4.5ns (1sigma) using a single band receiver

The GT-88 is the high-stability, high-accuracy timing Multi-GNSS receiver.
It incorporates Dynamic Satellite Selection™, which is a new satellite signal selection algorithm developed by NTT. Thanks to that GT-88 permits GNSS antennas to be mounted more freely than ever before including wall mounting and window mounting installations.

New product: High robustness with dual frequency band reception of L1 and L5. The GT-100 can also deliver programmable frequency clock outputs.

  • GNSS (Timing, Automotive/Industrial)

Features

Enable to output accurate and robust UTC time and 1PPS synchronized with UTC time

FURUNO technology made it possible to achieve 5G-required performance. 4.5ns (1 sigma) by a single band receiver is obtained. This is achieved by an improved and advanced position estimation algorithm. It optimizes position calculations using several different GNSS satellite constellations. It allows users to achieve 5G-required performance without changing existing single band GNSS antennas.

GNSS antennas can be mounted on walls and windows of tall buildings

The Dynamic Satellite Selection™* minimizes deterioration of time synchronization performance by choosing only the high quality satellite signals

Suitable for various RF・Broadcasting applications. Designed functions aiming to solve usual troubles on site.

The number of radio stations applied with GNSS time synchronization, ex. PMR, local 5G, and V2X, has been increasing year by year. Especially in urban area, users have to face problems such as urban canyon (signals blocked) and multi-path (signals reflected) etc.

Compliant with G.8272 PRTC-A

Concurrent reception of GPS/GLONASS/Galileo/QZSS/SBAS

Suitable for various communication and broadcasting applications

TRAIM, Single Satellite Tracking, Multipath Mitigation, Anti-Jamming and Anti-Spoofing

Configurable frequency output (10 Hz to 40 MHz)

Enhance performance in combination with recommended antenna

AU-300 Multi-GNSS Timing Antenna delivers both high stability and high robustness.

Specifications

General

GNSS Reception Capability

GPS L1C/A, GLONASS L1OF, Galileo E1B/E1C, QZSS L1C/A, QZSS L1S, SBAS L1C/A

GNSS Reception

32 channels

Sensitivity

GPS
Tracking: > -162 dBm
Acquisition: > -148 dBm

GLONASS
Tracking: > -158 dBm
Acquisition: > -144 dBm

Galileo
Tracking: > -146 dBm
Acquisition: > -136 dBm

QZSS
Tracking: > -147 dBm
Acquisition: > -131 dBm

*Measurement platform with recommended active antenna

ITU-T Recommendation

Compliant with G.8272 PRTC-A

*Compliant with TDEV/MTIE

1PPS Stability

< 4.5 ns (1σ)

*Open sky

1PPS Accuracy

< ± 40 ns (vs UTC)

*Open sky

1PPS Resolution

± 1.75 ns

Clock Output

10 Hz to 40 MHz

TTFF (Typical)

Hot Start: <5 sec
Cold Start: <35 sec

*Measurement platform with recommended active antenna

Supply Voltage

3.3 VDC

Current Consumption

< 68 mA

*85℃ when tracking

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)

Interfaces

UART, Time Pulse (1PPS), Clock

Functions

Anti-Jamming (8CW), Multipath Mitigation (Dynamic Satellite Selection™), Anti-Spoofing, T-RAIM

Countermeasure for GNSS receiver failure

We provide technical white papers for each of the typical failures caused by GNSS receiver. For each failures, our experts in time synchronization explain details about countermeasures on receiver side, using diagrams to show the effectiveness, and how to select products. If you are considering a GNSS receiver for the first time, please take a look.

  • High stability with single band receiver
    White Paper: High Stability of 4.5ns (1 sigma) using a single band GNSS timing receiver
  • Multipath in Urban area
    White Paper: Industry-leading multipath mitigation in urban canyon environments
  • Jamming (interference wave)
    White Paper: Measures against GNSS jamming (jamming wave)
  • Spoofing
    White Paper: Measures against GNSS spoofing signals
  • Interruption of GNSS signal (holdover)
    White Paper: "Holdover function" as measures against GNSS reception interruptions

The GT-88 doesn't have holdover function. If necessary, please use GF-8802/GF-8803/GF-8804/GF-8805 instead.

Quote Request

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This is a quote form only for GNSS receivers for time synchronization.
For other contents, please contact us using the respective inquiry form.

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