GRIP - GNSS Receiver Prototype Builder

GRIP is a new concept of GNSS Receiver that allows full access to internal registers on a powerful and modular board supporting advanced signal tracking and optimised interfaces.

GRIP consists of a main board including the receiver core, FLASH and SDRAM, local oscillator and various interfaces, asEthernet, PCIe, JTAG and general purpose I/O (GPIO) pins (FMC connector, header pins), and a second plug-in board which includes the RF core and CAN bus interface.

GRIP contains up to 160 real correlators and 16 fully flexible channels for dual-system and single-frequency configurations, supporting real-time Galileo E1 CBOC, Galileo E5 AltBOC, GPS L1 C/A, GPS L1C and GPS L5 signals. Dual-frequency also supported with use of external front-end.

GRIP has two companion software applications for receiver monitoring and control: GRIP-CENTER, a multi-platform Java-based application which allows local/remote output visualization and analysis as well basic receiver control; and GRIP-MON, which allows the recording of internal receiver signals and provides read/write access to the GRIP’s hardware registers for advanced control and receiver monitoring, through a MATLAB extension and toolbox.
GRIP is supplied with the register data sheet, allowing users to develop software and uploading it to the receiver. Such capability allows building an entire receiver and its application software from scratch.

• Applications requiring hybridization with external sensors (accelerometers, gyroscopes, barometer, magnetometer, Wi-Fi, LIDAR,   etc.) with various integration approaches (up to deep integration)
• Performance assessment of high precision applications using BOC/CBOC/AltBOC signals
• R&D projects
• Validation and testing
• Education: go inside a hardware receiver!
• Signal-in-Space understanding and verification
• Post-processing of GNSS measurements for multipath and interference analysis
The GRIP-CENTER software interfaces the GRIP receiver to download, in real-time, elementary data and displaying it on a dedicated graphical user interface. It allows visualization and analysis of receiver observables as well as display of the navigation solution on a map. The software includes binary to RINEX conversion capability.

• PC running Microsoft® Windows XP OS with 2GB RAM, Intel Pentium 4 @3GHz
  or better
• Available Ethernet port
• Internet connection for map visualization
GRIP-MON is an advanced receiver monitoring and control software application for real-time access to receiver registers via PCIe interface. It includes a MATLAB® extension which allows real-time monitoring and control of internal receiver signals and registers.

GRIP-MON provides a user with direct memory access to GRIP memory areas. It supports two monitoring methods: Data Recording to file and MATLAB Requests (read/write). The user is supplied with a list of all accessible GRIP registers and their read/write permissions, allowing the modification of many configuration parameters (integration times, loop discriminators, loop bandwidths, among others).

• PC running Microsoft® Windows XP OS with 2GB RAM, Intel Pentium 4 @3GHz or better and power supply with at least 450Watt
• MATLAB, version R2009b or higher
• Available PCIe slot




GRIP-MON video demonstration


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