With IMU integration, USB and Bluetooth connectivity, compact flash card logging and audio functionality for voice tagging, the VBOX 3i represents a flexible solution to a range of testing requirements.

IMU integration ensures accurate test results in areas of unreliable satellite reception, typically caused by trees, buildings and bridges. The vehicle's body angles are also measured to a high accuracy without the need to use a dual antenna system.

rtk gps logger

Dynamic overshoot is eliminated through lever arm correction. Impressive for a device using satellites 18, km away! More about GPS accuracy. The VBOX 3i has a host of features which makes it a very powerful and flexible vehicle testing data logger. VBOX 3i is compatible with all existing peripherals. The VBOX Test Suite Brake Testing plugin, for example, is designed so that engineers can conduct brake stop testing that conforms to regulations specified in all regions.

The brake test plugin is configured to produce results based on speed to speed parameters or by a variety of alternative inputs such as trigger, brake pressure or position values. Tests can be run within a tightly defined set of criteria, such as between temperature ranges. Centreline deviation is automatically calculated during each run, and thresholds can be applied to ensure that the operative gets immediate feedback on the validity of results. The plugin also produces a comprehensive report that includes all the relevant test results along with the engineer's notes.

Download or print datasheet here. Tags: vbox vbox3i gps data logger.

rtk gps logger

Features Features The VBOX 3i has a host of features which makes it a very powerful and flexible vehicle testing data logger. Auto calibration of wheel speeds Wheel slip calculations The plugin also produces a comprehensive report that includes all the relevant test results along with the engineer's notes.

Vehicle CAN Bus, laser height sensors, or steering wheel sensor. Data is recorded from each channel simultaneously to avoid latency between analogue channel data.

The name, scale and offset of each analogue input channel can be adjusted using VBOX Tools software to allow sensor calibration and therefore logging of data in standard SI units. The analogue input connector also provides two power outputs that may be used for driving sensors. Log rates can be set to either Hz or Hz.

Low current consumption results in extended battery life. The baud rate and CAN id's for these outputs are user configurable. Provides the facility to connect to a radio telemetry system to offer PC monitoring of test data.

The Bluetooth connection is capable of sending data at the full Hz rate. CF Card Data is logged in a space-delimited text format. Recording time dependent on flash card capacity, log frequency, number of channels and logging conditions. Please note only compact flash cards up to 32 GB capacity are supported.Usually autopilot triggers the camera and records the coordinate it has at that moment.

In addition, there is always a delay between the trigger and the actual moment the photo is taken. Reach solves the problem of positioning by connecting directly to the camera hot shoe port, which is synced with the shutter. The time and coordinates of each photo are logged with a resolution of less than a microsecond.

This method allows GCPs to be used only to check your accuracy. Every time a photo is taken camera produces a pulse on a flash hot-shoe connector which is synced to a shutter opening. Reach captures flash sync pulses with sub-microsecond resolution and stores them in a raw data RINEX log in the internal memory.

The produced file with precise coordinates of the photos can be used for georeferencing. VRS is also supported. ReachView is the most user-friendly software for data collection that is available both for Android and iOS. Reach is able to trigger cameras as well as register events. The event mark feature is a must for aerial mapping as it allows the precise time when the shutter was activated to be registered. View a list of the logs and download them using the ReachView app.

As a brief synopsis of the results, the maximum deviation of points was no more than 0. This is an incredible result given the fact that the average pixel size of the resulting imagery was 0.

rtk gps logger

The average mean error in all axes is just few mm! The system has been benchmarked by comparing a direct georeferenced model with a set of GCPs, used solely for error detection purposes. ReachView app and all features of Reach receivers are included. Email us at support emlid. We normally reply within one working day. However, in most cases, you will hear from us in a few hours. I agree to have my name and email transferred to our customer support system see our Privacy Policy for more information.

PPK mapping with centimeter accuracy. Why camera synchronization is so important Usually autopilot triggers the camera and records the coordinate it has at that moment. Reach eliminates the delay Reach solves the problem of positioning by connecting directly to the camera hot shoe port, which is synced with the shutter. Connect Reach to a hot shoe port on a camera Every time a photo is taken camera produces a pulse on a flash hot-shoe connector which is synced to a shutter opening.

Fly a drone, Reach will record photo events Reach captures flash sync pulses with sub-microsecond resolution and stores them in a raw data RINEX log in the internal memory. Reach M2 and Reach RS2 Provides robust performance and quick initialization, allowing work on long baselines.

Comes with an app ReachView is the most user-friendly software for data collection that is available both for Android and iOS. Camera control Reach is able to trigger cameras as well as register events. Monitoring data ReachView shows current satellite levels, your location on a map, and much more.This top-of-the-range data logger combines all the advantages of a twin antenna GPS setup with GLONASS satellite tracking and can be used in any number of vehicle tests where positional accuracy and repeatability are of the utmost importance.

For tests where positional accuracy is of key importance, like lane departure testingdistance to a fixed object, or precise mapping, the VBOX 3i RTK offers industry-leading 2 cm positional accuracy, in real time, at Hz! Centimetre-level position accuracy can be used for a number of standard industry tests. For example:. This level of automation results in a significant reduction in post-processing work as well as the time already saved on track.

Download or print datasheet here. Applications Applications Centimetre-level position accuracy can be used for a number of standard industry tests. Velocity and heading are calculated via Doppler Shift in the GPS carrier signal, providing you with unparalleled data accuracy. The secondary antenna enables logging of additional channels like slip angle, pitch or roll angle depending on antenna orientation.

Vehicle CAN Bus, laser height sensors, or steering wheel sensor. Brake Trigger By using a physical pressure switch on the brake pedal, a precise 'start of braking event' can be captured. Data is recorded from each channel simultaneously to avoid latency between analogue channel data.

The name, scale and offset of each analogue input channel can be adjusted using VBOX Tools software to allow sensor calibration and therefore logging of data in standard SI units.

The analogue input connector also provides two power outputs that may be used for driving sensors. Log rates can be set to either Hz or Hz. Low current consumption results in extended battery life. The baud rate and CAN id's for these outputs are user configurable.

Provides the facility to connect to a radio telemetry system to offer PC monitoring of test data. The Bluetooth connection is capable of sending data at the full Hz rate. CF Card Data is logged in a space-delimited text format.For surveying, mapping and navigation.

Comes with a mobile app. The most user-friendly software for data collection that is available both for Android and iOS. Record each position as a point with centimeter-precise coordinates. Stakeout is used to find exact physical locations of points. The stakeout process in ReachView has two steps: map view and bulls-eye. Map's purpose is to help you navigate to points on long distances. When you get closer than 40 cm to the point, bulls-eye turns on to make it easier for you to visually match the receiver and point.

Record raw data, position and base correction logs. Point collection and the recording of RAW data are independent processes and can be used simultaneously. ReachView has a simple and intuitive interface for logging configuration and control. Reach is able turn on and off in sync with an external battery connected over RS This helps when the power button is hard to reach, for example, if the receiver is placed on the roof of a tractor.

VRS is also supported. The Dromine team carries out a UAV-based volumetric survey to assess feldspar stock at the site. Investigating thickness, structure, and subglacial topography of a glacier in Iceland. Working with the Indonesian government to find an efficient way to map the whole country.

Quickstart guides and a comprehensive feature overview. Step-by-step tutorials covering the most common applications. Regularly updated by our support team according to the most frequently asked questions. Share your project or ask any question on our community forum to get answers from experienced users and the Emlid team. Stories about using Emlid products from users all over the world.

Email us at support emlid. We normally reply within one working day. However, in most cases, you will hear from us in a few hours. I agree to have my name and email transferred to our customer support system see our Privacy Policy for more information. Surveying with ReachView The most user-friendly software for data collection that is available both for Android and iOS. Point collection: create projects, save points, and export in industry standard formats.

Stakeout: Find the position of points on the ground. Reach can turn on and off automatically Reach is able turn on and off in sync with an external battery connected over RS Dense forests, mountains, frost, heat and water, Reach can handle them all IP67 Can be held 1 meter deep under water for half an hour.

Can charge over USB from a powerbank. Archaeo Perspective, Italy Surveying a maritime archaeological site. University of Latvia Investigating thickness, structure, and subglacial topography of a glacier in Iceland.

Meridia, Netherlands Working with the Indonesian government to find an efficient way to map the whole country. Tutorials Quickstart guides and a comprehensive feature overview. Community forum Share your project or ask any question on our community forum to get answers from experienced users and the Emlid team.

VBOX 3i | 100Hz Data Logger

Have a question?Of course, if you want to collect base and rover data, that means lugging around two laptops, which if added to the cost of the system, start to make it not look so low cost and also not so convenient since the laptops are so much larger than the receivers. An inexpensive alternative to the laptop is to configure one of the many linux-based single board computers that are available to collect the data.

They can also be used to process the data but in this post I will focus on collecting the data for post-processing later.

I have used both Beaglebone and Pi boards to do this and find they each have their advantages. In this post I will describe setting up a Pi Zero for this purpose.

The advantages of the Pi Zero over the Beaglebone are it's lower price and smaller size. One of the disadvantages is that it does require soldering since there are no host USB ports or headers on the board. The other is that it only has a single UART port, so does not have the flexibility of the Beaglebone. This is important for example if you want to add a radio link for real-time data collection.

Like the Beaglebone, it does have an I2C port which can be used to collect magnetometer digital compass data if your receiver includes that feature. Still, this is less than half the price of the least expensive version of the Beaglebone. Here's a stock photo of one in case you haven't already seen it. In addition to the Pi Zero, you will need a microSD card to use as non-volatile storage for the operating system, programs, and data.

I believe any size 4 GB or larger will work. Both include USB cables but they are power only, you will need a power and data cable for communication between PC and Zero.

I will describe the process I went through to connect the receiver to the Zero and to configure the Zero to automatically start collecting data when power is applied. I did this using a Windows PC but I imagine it would not be very different if you are using another machine. I am no expert in linux so I relied heavily on cutting and pasting various pieces of code from different tutorials I found online.

µINS + RTK Development Kit – EVB2 w/Radio & Logger

The next step is to copy an operating system onto the microSD card. Raspbian Jessie Lite is a minimal image of linux based on Debian Jessie. To get the image onto your SD card, download the image to your computer, decompress it, and copy it to the SD card using the "Write" button on WinDiskImager. This is done with the card plugged into the laptop using a microSD to SD adapter.

There is an excellent tutorial here on how to do this by modifying the config.Using dynamic differential technology, it provides ultra-accurate, centimeter level 3D positioning. This enhanced accuracy over typical barometer, compass and GPS systems makes D-RTK essential for commercial, industrial and scientific applications where accuracy is imperative.

Consumer Drones Comparison Osmo Comparison. Shot on DJI. Short Film. DJI Pro. Public Safety. Flight Controllers Increased reliability and precision A3 N3. Repair Services One-stop aftersales service for worry-free repairs. Services Plans Comprehensive care services providing peace of mind.

More Services Master your product with these guides. Proceed to Checkout. Login Register. What is the D-RTK? The D-RTK system is compatible with a range of airframes, and gives the equipped system centimeter-level positioning accuracy both horizontally and vertically. But when mounted on a Matricepositions for the two systems overlap.

You will need to adjust the mounting position for one or both of the devices to uses them simultaneously. To do so, the antenna must be mounted in the Master antenna position.

When used with a single antenna, the D-RTK system will only be able to provide positioning information but no heading information. When the Air System and Ground System are within a 10km distance from each other, their absolute positioning accuracy will depend on the accuracy of the Ground Systems satellite-based positioning.

The relative positioning accuracy between the Air System and Ground system is down to the centimeter-level. For navigation, the D-RTK will calculate the position vector from the Master antenna to the Slave antenna to accurately determine its direction. Remember to connect the antennas to DJI Assistant 2 and configure antenna offset parameters after switching places. Use D-RTK in open areas, unobstructed and free of interference. Measure the distance between the gravitational center and the center of the antennas and enter that as the offset parameter.

The GPS module will take over positioning and navigation, and the system will continue to function as before. Yes, but in this scenario the system will fall back to GPS positioning only. If signal strength increases during flight, D-RTK will take over. If the D-RTK is not able to receive the signal it needs for its full functionality, the system will fall back to GPS positioning and compass for heading. But you need to purchase the tripod mount for the Ground System separately.Kinematic surveying, also known as stop-and-go kinematic surveying, is not new.

The original kinematic GPS innovator, Dr. Benjamin Remondi, developed the idea in the mids. Real-Time Kinematic, RTK, is a method that provides positional accuracy nearly as good as static carrier phase positioning, but faster. RTK accomplishes positioning in real-time shown in the figure above Figure 7. It involves the use of at least one stationary reference receiver, the base station, and at least one moving receiver, the rover.

All the receivers involved observe the same satellites simultaneously.

Reach: affordable RTK GPS

The base receivers are stationary on control points. The rovers move from project point to project point across, stopping momentarily at each new point, usually briefly. The collected data provides vectors between themselves and the base receivers as shown in Figure 7. RTK has become routine in development and engineering surveys where the distance between the base and roving receivers can most often be measured in thousands of feet.

VBOX 3i RTK | ADAS Testing

When compared with the other relative positioning methods, there is little question that the very short sessions of the real-time kinematic method can produce the largest number of positions in the least amount of time. The remarkable thing is that this technique can do so with only slight degradation in the accuracy of the work. Real-time kinematic is done by carrier phase ranging. It must track five satellites minimum. The reason for the five satellites is basically to have one spare so that you're absolutely sure that you will have a position all the time.

The base station is set up on a known point there is a transmission antenna associated with it through which a radio transmitter sends corrections to a rover. The baselines are typically at 10 to 20 kilometers, which is considerably shorter than DGPS's effective range. RTK receivers can be single- or multi-frequency receivers with GPS antennas, but multi-frequency receivers are usual because RTK relies on carrier phase observations corrected in real-time.

In other words, it depends on the fixing of the integer cycle ambiguity, and that is most efficiently accomplished with a multi-frequency GPS receiver capable of making both carrier phase and precise pseudorange measurements. Here is one way it can be done. A search area is defined in the volume of the possible solutions, but that group is narrowed down quite a bit by using pseudoranges.


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