GNSS Receivers for Precise Position Measurement (2024)

Reliable GPS navigation measurement

Dewesoft provides various GNSS-based receiver devices for the most precise position-based test and measurement applications. OurGNSS receivers are compatible with various satellite constellations to ensure the best signal coverage and the most precise and robust position tracking:

• GPS L1 andL2

• GLONASS L1 and L2

• GALILEO E1

• COMPASS L1

• BeiDou B1 and B2

Severa GNSS receiver devices are available, either in stand-alone chassis or integrated into the heart of our data acquisition systems. Scroll further for different options available.

RTK support - Real-Time Kinematics correction for maximum positioning accuracy

Dewesoft GNSSinstruments offer optional RTK (Real-time Kinematics) correction technology. RTK upgrade improves navigation accuracy down to 1 cm. It supports CMR+, RTCM 2.3, and RTCM 3.x GNSS corrections data. The RTK corrections data type is automatically detected.

Dewesoft provides all hardware and accessories needed to establish theRTKsetup:

• RTK base station

• RTK antennas

• 3G and RF modems for data transmission between moving vehicles and base stations

Synchronization with analog and digital data sources

Synchronization is the most important aspectof every test and measurement application. Without the right correlation of data, it's impossible to get correct results.

Parameters from navigational devices like position, velocity, acceleration, altitude, pitch, roll,and headingare completely synchronized down to microseconds to the data from other sources like CAN bus, analog (vibrations, deformations, flow), counter/encoder (RPM, angles), video, XCP/CCP, Kistler KiRoad, and others.

The GPS and IMU devices provide exact time information that allows different devices to be perfectly synchronized even if they are on the other side of the globe. This is great for test scenarios with multiple vehicles. Dewesoft NET technology allows getting all data to a master vehiclefully synchronized.

DS-VGPS-HS and DS-VGPS-HSC
100 Hz GNSS Receivers

GPS-VGPS-HS and DS-VGPS-HSC GNSS receivers are GPS-based USB GNSS receiver devices for precise position, speed, and displacement measurement.

Devices are equipped with the latest GPS technology with 100 Hz GPS-based speed and displacement sensors. The result is a high-dynamic GPS receiver and an easy-to-use speed/distance sensor with high bandwidth. In addition to this, no calibration drives for different road conditions (ice, water, snow, off-road) are needed.

Main features

• Real 100 Hz GPS engine

• Portable and rugged construction

• Insensitivity to the road surface (can be used on mud off-road, water, snow, ice,..)

• No calibration is required

• Easy-to-install and easy-to-use

• Supports differential GPS (SBAS) as a standard function

• Mark input for brake trigger switch

• Data over USB or COM with zero latency PPS sync

• CAN output (DS-VGPS-HSC)

DS-VGPS-CLOCK
GPS clock provider and GNSS receiver

The DS-GPS-CLOCK uses a 10 Hz GNSS sensor and can be used for simple positioning measurement applications as well as for synchronization of Dewesoft data acquisition systems.

The DS-GPS-CLOCK is a synchronized time base generator capable of using either GPS or IRIG as a time source. This allows completely synchronized data acquisition of multiple systems whether they are mobile or stationary. Additionally, the DS-GPS-CLOCK can also be used as an IRIG time code generator (output IRIG B/DC) synchronized to the GPS time.

The base of any GPS receiver is precise time measurement. In addition to the position information, a precise PPS (pulse per second) is generated by the GPS engine. This pulse is used to synchronize a 40 MHz oscillator with software PLL (phase-locked loop). The result is an ultra-stable 40 MHz clock source that is completely free of drift over time.

ECAT-GPS-JUNCTION
EtherCAT® GPS synchronization junction

EtherCAT® GPS synchronization junctiondevice is used similarly to synchronization junction forsynchronization betweenUSB and EtherCAT®-based data acquisition devices but by using GPS as a time source.

ECAT GPS junction has a built-in 10 Hz GPS receiver andconnector for connectingGPS or IRIG-B-DC time code signal. The devices are synchronized using this time code.

The built-in GPS receiver can also be used for recording positioning information, just like with anyother Dewesoft GNSS navigationaldevice.

Embedded GNSS receiver for SBOX processing computers

Our SBOX data processing computers can optionally be equipped with 10 Hz or 100 Hz GNSS receivers for precise positioning measurement. The embedded GNSS sensors can be integrated into the following Dewesoft systems:

• SBOX data processing computer

• SBOX Waterproof data processing computer

• R1DB/R2DB portable data acquisition systems

• R2 data acquisition systems

• R4 data acquisition systems

• R8 data acquisition systems

• R8DB data acquisition systems

The embedded GNSS receivers (100 Hz version) offer the same navigational and accuracy capabilities as our standalone 100 Hz DS-VGPS-HS/HSC units.

GPS Display

Bright, small, rugged LED display accessory is available for the drivers that can be used inside the vehicle. The display can be directly connected to any of our GPS devices and will display:

• Speed

• Heading

• Altitude

• Time

• The number of satellites in reach

Interactive map visual control

The DewesoftX DAQ software offers real-time 2D and 3D map visual control. The map visual controloffers a built-in interactive GPS mapvia Open Street Maps. Several layers of map tiles are available:

• Out-of-the-box satellite imaging with open-source OpenStreetMap layers hosted on Dewesoft’s map servers.

• Support for custom tile and WMS layers as well as georeferenced images.

• No manual alignment is required.

• 2D, 3D, and terrain display modes with standard, 1st, or 3d person camera options.

• Online or offline support. Images can be pre-downloaded for offline usage.

• Support of multiple layers with individually configurable opacity levels.

• Channel-based trace coloring with various color schemes.

• Ability to display multiple GPS signals on one widget.

• 3D model widget for yaw, pitch, and roll monitoring.

The mapping widget works no matter the GNSS/IMU hardware used. It works with any Dewesoft GNSS receiver or inertial navigation hardware. The widget also works with 3rd party supported INS hardware such asOxTS, Genesys ADMA,or if you get navigational data through CAN or other supported interfaces.

Virtual 3D polygon

DewesoftX data acquisition software features a virtual polygon modulefor tests involving moving objects. It can visualizemoving and static objects in a 3D virtual space. Polygon can also perform geometric measurements between multiple static or movable objects.

Polygon visualization and outputs can be calculated in real-time during the measurements or offline. It was specifically made for ADAS testingand vehicle dynamics testing but is far from being limited to just these two areas.

Processing mathematics of the virtual polygon module provides definable outputs:

• Distance calculations (X and Y distance)

• Angle calculations

• Gate cross triggers

• Time and time reset

• Radius calculations

GPS and inertial navigation applications

We provide a total solution for advanced position-based test and measurement applications. DewesoftX software received multiple innovation rewards, including software innovation of the year by Automotive Testing Technology International magazine, and serves as a one-stop software for all navigational tests.

Supported applications

• Vehicle Dynamics

• Brake Testing

• ADAS testing

• Road load data acquisition

• Acceleration test

• Circle drive

• FUSI

Additional GNSS measurement resources

• GNSSmeasurementonline training course

• Polygon online training course

• DewesoftX map visual control softwaremanual

• DewesoftXGPS module software manual