Aircraft that feature RTK allows pilots to fly close to objects and operate in small spaces. RTK also provides the pilot with meticulous data even when the aircraft is moving. This type of interference typically occurs when aircraft fly close to radio towers, power lines, and metal edifices.
The aforementioned benefits make RTK an ideal choice for enterprise pilots for industrial applications. Apart from protection, RTK is also helpful in geotagging of the data captured by the aircraft that includes both video and images. It has made inspections easier and thorough. Before RTK, telecommunication inspections were a much more rigorous and time-consuming process. With stable hovering features, images can also be taken if required even when the aircraft is moving.
Apart from the Telecommunication industry, RTK has been massively beneficial in Powerline inspection. It has promoted safety along with productivity. Carrying out inspection using RTK powered drones will now provide accurate information but also save time. RTK is immensely beneficial for improving vertical accuracy while surveying stockpile. Using a combination of RTK and waypoints, accuracy in mapping and surveying can also be improved dramatically.
Waypoints also create autonomous flight on pre-selected courses. RTK ensures that your drone remains on course both vertically and horizontally. The usage of drones in cinematography is not something new. They have been used profoundly since drones started featuring video-taking capabilities. The usage of drones in cinematography has seen rapid growth in the past few years with the introduction of RTK. Depending on the implementation, positioning data from the permanent stations is regularly communicated to a central processing station.
On demand from RTK user terminals, which transmit their approximate location to the central station, the central station calculates and transmits correction information or corrected position to the RTK user terminal. The benefit of this approach is an overall reduction in the number of RTK base stations required. Depending on the implementation, data may be transmitted over cellular radio links or other wireless medium.
Chapter 5 - Resolving Errors. Real-Time Kinematic RTK The positioning technique we described in Chapter 2 is referred to as code-based positioning, because the receiver correlates with and uses the pseudorandom codes transmitted by four or more satellites to determine the ranges to the satellites.
Because a single base station can be used simultaneously by all receivers in range, fixed based stations are ideal for proving grounds or test tracks, where you are testing in a confined area of up to 10 kilometres radius. This method requires a constant internet connection via a GSM modem or smartphone and a subscription to your local NTRIP service provider, who will have an infrastructure of fixed base stations forming a national or regional network. This is ideal for open-road testing where you will be more than 10 kilometres from a single, fixed base station.
Using DGPS typically improves position accuracy to within 1 - 2 m. The base station can also be on a moving vehicle, in which case the corrections needs to be sent out at the sample rate of the receiving GPS engine, and the accuracy is slightly reduced to around cm.
It works by linking two VBOX 3i RTK units, with the system in the subject vehicle transmitting corrections to the target vehicle at an update rate of 20 times per second. The accuracy is enhanced by employing signals from multiple frequencies and constellations, as well as a method which uses refined delta positions obtained from carrier phase measurements.
This reduces the noise levels of pseudo-range measurements raw distances to each satellite and removes positional jumps. Any application that requires centimetre level accuracy is likely to benefit from having RTK as the source of correctional data. Typical applications include ADAS testing, autonomous vehicle validation, ground truth measurement, and path following.
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