 Good morning, everybody here. And I'm very glad that you could be here with me. And now I'm from HiTaget, a GNSS receiver manufacturer from China. Today my topic will be to share you about our GNSS smart antenna with IMU and cameras. OK, the slides of today will be divided into four parts. The first one is an introduction about this specific product, VRTK. And the next will be some function highlights about the product, and then applications where you could use the VisionRTK to in-off drop, and at last some cases to share. OK, this is me. And so nowadays a lot of GNSS manufacturers they'd prefer to put a lot of sensors in the series. For example, several very major characteristics you can see in the current RTKs. First is, of course, the IMU unit, because for some reasons you cannot put the tip of the port to the target, and you need to tilt a bit so the tilt compensation is there. Now it's a standard function for IMU for RTKs. And then the satellite-based augmentation system to get a very strong signal in the areas, for example, for in-deserts, because there are no cost reference stations to assist to improve the accuracy. And of course, for seas, and there's no communication at all, and for the urban areas, it's also very difficult to get fixed of your RTK. And then for constellation of multi-frequency, now everybody knows that we have several constellations in the sky, GPS, GLONASS, Galileo. And now Chinese have launched the Beto system already working in the sky. And also there are QZSS, if you mentioned Japan. So apart from the IMU and full constellation, what would be new? Where is the innovation nowadays? And at last year, High Target has launched the first GNSS RTK smart antenna with two cameras. Maybe before you have seen already one big brand, they have one camera version of GNSS RTK. And High Target would be the first to launch a product with two cameras. And I believe nowadays, today, like this time at Intel Geo 2023, you've seen a lot of RTKs that have two cameras, but we launched this product last year. So this is the innovation, and that we believe the camera will help a lot for your job in the field. So measurement will no longer hit the wall anywhere. And what you see is what you get, which means if you see the picture, you can capture with the GNSS RTK, the VRTK we have. And then you will get a point directly from the image. And the size of the RTK is also getting smaller. And it's a pocket size with only 900 grams. And it's easy to carry, of course. And the signal and data, the strong signal, we have 1,400 channels of the GNSS chip. Its full system is supported for frequency at point. And multi-frequency point anti-interference technology is also adopted. And of course, high-fix function is very well known for high-target product. In case there is no signal area, the system will adopt the previous several minutes infamory data and keeps the accuracy to be enough to use. And it will stand for five minutes if you lost the correction for some areas. And there's an IMU, of course. Nowadays everybody has IMU. And we also updated our new IMU system. And it will be a calibration-free system. And you can directly start it and then do the tilt survey and do the tilt compensation at very easy step. This picture shows how to enable the system. No need to shake it no more. And just start it and go for a walk. And you will go into the tilt compensation mode. OK, for the test result, you can see in the open sky and the canopy environment, it's all available. And the IMU accuracy of VRTK is better, especially for large angles like 30 degrees and a complex environment. And the camera, now we talk about positioning and image. What the camera could do. At first, it's for AI live view sticking out. And second is for image survey and the last 3D modeling. Before we try to find a point in the field, you will use the conventional way. The screen maybe will indicate to go forward, go left, go right. And then maybe with tilt survey, we can make the port tilt on the shoulder and do like a swiping mode. And now the VRTK has two cameras. The bottom camera will indicate to you where the point is. And then you can see from the display. There is a picture with a real live stream picture. You can directly find the point on the picture. This is, actually there is a video. I'm not sure if you can help me to click the video. Hello. The video of the right side. Yeah, yeah, this also works. And like you can see, when you walk from toward, you will, when you reach to the point, you will find the point is directly over there. And that's the point that you need to find. It's very simple to use. And the bottom camera will be sufficient to find the points. Okay, and the image survey is kind of a non-contact surveying technology. The front camera will take several pictures for the area that you want to scan or you want to collect. So with several pictures, after processing, you can directly get the point on the wall. It's a kind of a land photogrammetry technology. And the range will be maximum at 15 meters. So it's not, it's already enough for most of the applications. If you are a surveyor, you must have an experience that being chased by dogs in the wild, right? If you are not chased by a dog, maybe you are not a qualified surveyor, I think. So sometimes in the area, dog sudden comes out and you cannot get too close to the target. And of course some, if there is a river, you need to take measurements off-site so you cannot go over there too. And some dangerous environment and some blocked areas, it would be a problem in the field. And with this new VRTK, you can take several pictures and directly find the points you need to collect. The coordinates will be directly generated in the software. Okay, for the applications, there is another application is to do 3D modeling as we have the photogrammetry algorithm running. And if you take enough pictures, the models on the ground will be built in the software. We support several, we have our own software and also you can adopt the third-party software, very famous software, et cetera. And like this, if I want to make a 3D modeling for this area, you can take pictures around and then put everything into the software, this kind of 3D modeling will be generated. Okay, and to work together with oblique photogrammetry with drones, the first one you can see, if you fly only with drones and to do the oblique photogrammetry modeling, you will find some detailed, some parts of here are not very, will not be very well modeled because the cover from the sky, you cannot take pictures of that. But with the VRTK working together, you can find the details will be very well distributed in the modeling result. Okay, for cases, the first one case to use the VRTK is to do measurement Earthwork volume. And this is a case for, it's a project. We have 2.5 kilometers long area and 50 meters wide, it's an urban road construction project. And the purpose of this project is to clean up all the dust, all the earthwork around the street and we need to calculate how many tracks are needed. And if you fly with drones, it will be complex operation because in the urban areas there are some restrictions with drones and if you use LiDAR scanners, I think it's not also very professional job. But using an RTK, you can also, in the area, it's difficult to walk inside to click points. And with VRTK, you can not only measure the area, the outline, you can also do the 3D modeling directly and so the volume calculation is done at one time. So the step is to use VRTK to determine the area and then get to scan the area with photos and then process it through modeling software and then export the result and the report. So you can see it's, the first one is to determine the area and then take pictures, then do the processing and then calculate and generate a report. It's very simple to operate and clear, very clear workflow. And the second one is 3D modeling for Asian buildings. We already got the models with drones and the rough model is built but it's Asian building so the detailed information should be captured. And as you can see, the challenge is the traditional 3D modeling. If you look into the details, it's not very well. Under trees, under the roof, some memorial writings cannot be seen but to work with VRTK, it's a complementary for the solution. VRTK ground, you take several series of pictures and after you generate it, you have the triangulation calculation of the photos. Merge everything in one project and the 3D reconstruction will be done at one time. So this is the workflow step one to acquire with drone and then process the data together. Up on the sky, you will see that's the drone's trajectory and on the ground, it's the trajectory of the VRTK. So this is the final modeling result and there's a bit comparison. If you work without VRTK, it's under the roof, it's all blurred but together work with VRTK, you can see it's very detailed under the roof. So for nowadays people talking digital trains or some smart cities, some mesh, something, VRTK will be a very useful tool for you. This is another detail, under trees and here this side under the roof, it's all very clear. And some history writings, you can see the writings are very easy to distinguish. OK, thank you, that's all my presentation and in future if you have some questions, you can contact us and contact Hightech directly or you can come to our booth. Our booth is at B2570.