Multi Constellation and Multi Frequency


Multi-constellation and Multi-frequency Correlators Soft GNSS IP for high sensitivity and high accuracy GNSS receivers

Accord MGNSS IP (GNSS IP) is a silicon proven, AHB compliant, all-in view, Multi-constellation and Multi-frequency GNSS baseband IP core for integration in GNSS and Application SoCs for Automotive, Smartphones, Precision and IoT applications.

The IP core is highly configurable to support any of the legacy, modernized, and potential future GNSS signals of all available constellations, concurrently or sequentially based on the need of the application. A reduced version of the IP, MGNSS – B1 GNSS IP is available for IoT applications. Please contact to know more.

It also supports processing of two RF channels offering dual frequency GNSS capability, along with superior immunity features against pulsed and multi-tone interference.

The feature rich, energy efficient baseband provides ultra-fast acquisition and precision tracking performance. The unique baseband architecture provides configurability for very low power applications with reduced sampling rates, select signals, and power-down modes.

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Key Features

  • 64 parallel GNSS signal tracking channels with accurate and precise measurements
  • Massive and wide bandwidth correlators enable fast acquisition and high precision
  • Processes ADC output from one or two RF front-ends
  • Enables PPP and RTK positioning
  • Up to 1KHz measurement rate
  • Measurement generation on external event or internal 1PPS event
  • Battery Backed Counter to maintain GNSS time
  • Completely synchronous design with RMM guidelines
  • AMBA compliant AHB or Synchronous Parallel Bus interface to CPU
  • Optional internal signal generator for faster verification and validation
  • Patented architecture for lower power and lower logic area
  • Efficient and generic PRN code handling architecture to support future signal structures
  • Supports all signals in L1, L2, L5 and S band frequencies from GPS, GALILEO, GLONASS, BeiDou, QZSS, IRNSS, and SBAS constellations
  • Multi-tone continuous wave interference mitigation and pulsed interference mitigation to enable receiver to operate in intentional or unintentional interference environment
  • Configurable ADC interface – SDR (sampled data on rising edge), DDR (sampled data on rising and falling), various sampling frequencies, real or complex samples, 1-bit to 5-bit ADC data processing
  • Comprehensive power-down modes to reduce power consumption depending on the application


  • Direct support from Accord for IP integration
  • Optional customization Services for AGPS, DR, INS integration as well as for ASIC conversion
  • FPGA/ASIC platform for IP evaluation


GNSS based Network Time Server

Available Customizations

Additional port: 10Base-T/100Base-Tx on RJ-45 Connector for Time distribution over LAN using PTP (IEEE 1588) Protocol

NTP over fiber: 10/100/1000 Base-Lx, 1310nm, single mode fiber on LC type connector

2-U rack mountable Enclosure depending on the number of output connectors

DC supply input :18-36 V with lockable Circular connector

1-PPS output on multiple BNC female connectors

10 MHz output (Sine/Square) on multiple BNC female connector

External IRIG reference input for synchronization

Custom outputs and accessories supply as per site requirements

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Accord NGS has multiple GbE ports for time dissemination over the network using NTP protocol. It comes with multitude of customizable options for signal outputs and ports making it truly suited to meet the network and site requirements of the end-user.

White Paper

The Need for Time Synchronization

GNSS play a key role as a timing source for synchronising both wired and wireless telecommunication networks ...

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  • Fully synthesizable and technology independent RTL in VHDL
  • Compatible executable binary file for highly configurable GNSS receiver software
  • Synthesis scripts along with timing constraints
  • Verification environment including the test benches, input and expected output files, execution and analysis scripts
  • RTL IP integration manual
  • FPGA/ASIC evaluation platform for testing the performance of the IP
  • API manual for GNSS library
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Accord MGNSS IP (GNSS IP) correlator with Dual RF