At this time, Zhang Wenhao smiled indifferently and said to more than 10,000 people in the audience: "The 4D map you see in the opening video will be integrated with the positioning terminal of the Dongchen positioning system. The second type, flat 3D map, what is called flat 3D map, I think friends who are familiar with Google Earth should understand; The third is this kind of all-round free-angle 4D map, the perspective is no longer the same as the previous two, directly above you, but can be switched and positioned at will, just like you can see in the opening video, which is very realistic and very interesting. ”

Speaking, Zhang Wenhao said: "However, different terminals, the corresponding functions are also different, in the current public application field, we have launched three positioning terminals for the whole society, one is the Universal that updates the positioning module of Dongchen, the other is the Dongchen vehicle positioning system, and the other is the handheld positioning terminal specially launched by Dongchen. ”

The functions of these three kinds of terminals are somewhat surprising, for example, Universal terminal and handheld terminal, do not have adaptive system, that is to say, it is a simple positioning system, unlike the vehicle positioning system, can input all the information of the whole vehicle, in navigation and positioning, the cursor of navigation is the vehicle instead of a separate positioning point, this does not seem to be interesting, but it is actually very important, if you have your own parking space, then after parking in place, You can let the positioning system record your coordinates at this moment, so that with the original 360-degree driving radar of Dongchen Automobile, you can park the car in your parking space in the most accurate and safest way. If it is a high-end model of Dongchen. So. Your automatic parking system, under the guidance of the coordinates of the parking space, will be more relaxed and convenient, every time you go home to park, you don't need to set any data, the automatic parking system can automatically park your car into your own parking space. ”

"In addition, the car terminal has another advantage, that is, it can be like in the movie. Changing your own positioning points at will, although the practicality is not large, but in a special environment, it can still play a very huge role. ”

The audience listened attentively, Zhang Wenhao then spoke: "Just now you saw in the short film that the Dongchen positioning system has an altitude display, which I want to explain to you, the Dongchen positioning system is far from being as simple as everyone thinks, he can not only provide a positioning accuracy of less than one centimeter in plane positioning." The positioning accuracy at altitude is also less than one centimeter. ”

As soon as this statement came out. The room was full of surprise!

Elevation?

What is the best way to accurately measure altitude?

Zhang Wenhao saw that everyone was shocked, so he explained with a smile: "As we all know, there are two ways to measure altitude now, one is to use physical principles, that is, air pressure detection, and the other is to use the existing GPS positioning system. ”

"However, the former has a problem, that is, the measurement is not linear enough, to put it bluntly, the accuracy is not high enough, can only measure an approximate, and the response speed is very slow, and the latter, there is a bigger problem, that is, the error is too large, and the signal is very easy to interfere, the ground measurement may be more accurate, but once out of the ground, want to use GPS to measure the accurate altitude, it is simply as difficult as the sky."

"Dongchen's positioning system can already achieve accurate altitude measurement, which means that this system is not only suitable for the ground, but also for the air."

Saying that, Zhang Wenhao said: "Please read another short story." ”

Immediately afterwards, a short story was released on the scene again, and the scene of the test airport appeared on the big screen, but this time the measurement was not the process of Zhang Wenhao and the soy sauce party testing together, but the video taken by Dongchen when he measured alone.

Zhang Wenhao explained on the side: "Our positioning system, installed at the bottom of the front end of this helicopter, and the distance from the ground is 0.6 meters, so we have reduced the error value of 0.6 meters when installing, that is to say, the altitude we display in real time is not based on the front end of the aircraft, but on the bottom of the front wheel of the helicopter as the benchmark. ”

At this time, the helicopter engine began to start, and after a while, the helicopter began to climb, and before the on-board altitude gauge could give any response, Dongchen's positioning system had already given a response, and the altitude was still slowly increasing in centimeters.

The screen switches to two, one showing altitude data, and the other camera on the outside simultaneously captures the front wheels of the plane off the ground at this moment.

1 cm, 2 cm, 3 cm.

The altitude data given by the Dongchen positioning system is extremely accurate and quickly highlights the entire climbing process of the aircraft at this moment, which is also the biggest purpose of Zhang Wenhao's choice to use a helicopter for testing - very intuitive.

The helicopter flew a simple take-off and landing, in the whole process, the Dongchen positioning system will accurately display the height of the aircraft, and this system is very intelligent, before the aircraft takes off, it first calculates the ground altitude, and then, when climbing, while displaying the altitude, while subtracting the ground altitude with the real-time altitude, showing the actual altitude of the aircraft relative to the ground at this time.

The professionals who followed Raymond in the U.S. military saw at a glance the huge role of this system in the military field, especially the Air Force, oh my God, this perfect and precise support for altitude is simply a customized function specially developed for the Air Force, if Dongchen makes this positioning terminal public for civilian use, then, all the Air Forces of the United States can benefit a lot from here, after all, even if the ordinary civilian terminal does not support other ancillary functions, but, its core appeal has been highlighted very clearly, first, the positioning is extremely accurateSecond, the altitude positioning is extremely accurate, and the real-time response speed is almost error-free and delay-free, which is already very, very useful for the Air Force.

At the same time, in the United States, the senior and technical staff of the US Air Force were also very excited when they saw this, and even an engineer held a beer in one hand and pointed to a TV in the other. said: "If Dongchen opens this kind of terminal to civilian use. We immediately added Dongchen's positioning module to all of our aircraft. In this way, we will mark all our airport runways, which will greatly improve the efficiency and safety of the Air Force! ”

Another engineer also said: "In this case, we can use his module as the core and develop other ancillary functions by ourselves, and I believe that it will have very strong practicality!" ”

Just when they were excited. Zhang Wenhao's words sent them to hell.

Zhang Wenhao said with a wicked smile: "Because taking into account all factors, and also considering that the demand for altitude data is not large, therefore, all the civilian positioning modules released by Dongchen will limit the function of altitude, and we will not completely erase the altitude display function, however, we will make necessary restrictions on the real-time nature of altitude display, therefore, all civilian positioning terminals." None of them have the ability to display accurate altitude data in real time, and accurate altitude data is only updated every ten minutes. However, the approximate altitude will be displayed in real time, and the approximate altitude displayed in real time will have a positioning accuracy error of about 5 meters. ”

As soon as this sentence was finished, the military of various countries that were still very excited suddenly fell into an ice cave, damn, it takes ten minutes to update the accurate altitude data, if this thing is used on the plane, the daylily will be cold, ten minutes

The real-time altitude display doesn't have a damn high accuracy, isn't this a cheat?

Although for the militaries of various countries, Dongchen's killer move completely broke their minds, for the vast majority of ordinary users, real-time high-precision altitude basically has no meaning for them, so this has not affected their enthusiasm for Dongchen's satellite positioning system in the slightest.

At this moment, Zhang Wenhao on the stage looked very indifferent and full of confidence, he said: "Now, we invite you to watch another video, this video is a little special, most of the shots are shot with high-power infrared cameras, as for what kind of mystery there is, please find out for yourself." ”

This time, the audience found that the video was filmed at an airport, and the camera captured it from a high position, shooting the only plane on the tarmac, a 737 passenger plane from Boeing, the airport did not look like a passenger airport, and many staff members in special clothing were busy next to the 737, and it seemed that everyone's attention was focused on this commonplace 737.

The video sounded a sound similar to that made on the intercom, and the video was also accompanied by bilingual subtitles in Chinese and English, only to hear the voice say: "The ground work is ready, and the crew is making a sideline range for the landing gear of the aircraft." ”

Zhang Wenhao's voice came, and he said, "After drawing the line, prepare to take off." ”

At this time, the screen switches to the side of the plane, and three staff members can be seen holding the equipment used for painting, spraying white frames around the three landing gears of the aircraft, and completely drawing the landing gear into the frame.

A staff member on the ground held a walkie-talkie and said, "Everything is ready." ”

Zhang Wenhao's voice said: "Okay, stop all lighting!" ”

"Roger, stop all lighting."

For a moment, the footage captured by the high-mounted camera was plunged into darkness, except for a little light in the distance, and the entire airport was immersed in darkness, when the B737 engine sounded and the plane started.

The picture immediately switched to the high-power infrared camera, through the infrared camera, you can see that the 737 has started the engine and began to slowly draw out of the parking position, at this time, the lights of the cockpit of the aircraft are on, which is particularly clear under the infrared camera, and the focal length of the infrared camera is also expanded, so that the picture of the cabin is getting closer and closer, and the whole scene suddenly let out a burst of exclamations, because they can see that there is no one in the entire cockpit, to be exact, the plane is unmanned!

Unmanned aircraft is not a gimmick, after all, the United States began to use drones for reconnaissance and attack as early as ten or twenty years ago, but drones all over the world are a routine, that is, the cockpit is moved out and fixed on the ground, although no one is piloted on the plane, but there is a special person on the ground to fly the plane, so, fundamentally speaking, this is still a manned aircraft.

However, Dongchen's 737 is different, it. It is truly unmanned. And. It is in extremely poor visual conditions with almost no visual distance.

At this time, the narrator said in Chinese with English letters: "This plane is not an ordinary plane, it has no pilot, and there is no one remote control on the ground, all its flight tracks have been set and stored in its flight computer, and its flight tracks, the coordinates used are completely provided by the Dongchen satellite positioning system." The coordinate accuracy is less than one centimeter, and the flight control of the aircraft is also based on the modified Dongchen satellite positioning terminal, so the aircraft can perfectly perform the flight of the designated route, even in the case of unmanned driving, even if there is no line-of-sight for reference. ”

At this point, the plane has taxied a long distance and is preparing to enter the runway, and the route that the plane has taxied all the way is completely in line with the white center line. It's exactly the same.

When the plane turns into the runway, the aircraft engine starts to be pressed. From afterburner to lifting the front wheel to takeoff, the whole process is done in one go.

After the plane took off, the picture switched to the picture taken by the ordinary high-definition camera, the dark night sky can only see the flashing lights at the tail of the aircraft, and the plane value flew a standard five-sided, began to land, in the process of landing, the plane is also perfectly executed to the formulated route, from deceleration, descent is also in one go, the plane landed smoothly and decelerates, and then it itself along the route, back to the starting point, when the plane finally stopped at the moment, its landing gear tires, There is hardly any difference from the previous position that can be identified by the naked eye.

This time, the audience was completely silent, Raymond sat on the chair with a pale face, such a powerful precision, is impossible for any pilot to complete, it is too accurate, accurate like an embroidery needle, not a behemoth aircraft, Raymond saw at a glance the great significance contained in it, once this system is moved into the aircraft, then one thing is for sure, the plane can complete accurate take-off and landing without sight distance

What does this mean for airlines? It means that the cost can be better reduced, every airline, direct flight to multiple routes, often encounter weather reasons can not take off and land, can not take off, means that the utilization rate of the aircraft is reduced, delay two hours, the aircraft will make two hours less profits, can not land, it means that the aircraft must be alternated to other airports, excess range, excess take-off and landing process and waiting process, will increase the cost of huge additions, however, if Dongchen's system is promoted, then, The inability to take off and alternate because of the line-of-sight can be completely avoided, and this system can undoubtedly better increase the utilization rate of the airport and the take-off and landing efficiency of the entire airport inbound and outbound flights.

Raymond can even foresee that in the future, if Dongchen uses this system and Dongchen Aerotech's engine as a dual auxiliary, then even if Boeing integrates its own technology with Airbus, it will not be able to compete with Dongchen in the market, not to mention, God knows what kind of new technology Dongchen will apply to the aircraft in the future?!

Oh my God, Raymond's heart sank to the bottom, and it is foreseeable that after this press conference, Boeing's stock will fall again frustrated! Last time, because of Dongchen's acquisition of Airbus, it has already fallen sharply, and it was not easy for Boeing to rise after acquiring Airbus's patented technology and R&D personnel.

On the stock market, the evaporation of market value in one day may cause the market value of tens of billions to disappear, Raymond is really afraid, even he is afraid, not to mention shareholders?

People in the civil aviation system all over the world are excited about this amazing achievement, airlines see the prospect of efficient flight in the future, the air traffic control department also feels that such a strict and accurate positioning system, can provide them with more accurate air traffic control assistance, when the time comes, the existing routes can be compressed, the same height spacing, and even can be arranged into more than several times the previous routes, greatly increasing the utilization rate of the route, and the airport is also very excited, with the aviation industry is more and more developed, Airports around the world face a big problem of slow turnaround and too much load, but with this system, they can make their airports more utilized, without having to invest in expanded hardware, and can handle denser and larger numbers of aircraft coming in and out.

This time. Zhang Wenhao spoke.

"As we all know, Dongchen just completed the acquisition of Airbus some time ago, and now, we are already reintegrating Airbus's hardware, and it won't be long before Dongchen's first civil airliner will be able to roll off the assembly line and start test flights, one thing is for sure, just now this system is by no means the only highlight of Dongchen aircraft, and even, I can assure you that the supersonic passenger plane you saw at the opening is also the goal of Dongchen's next development, and it won't be long before you can see the actual product."

Speaking, Zhang Wenhao paused, and said: "In addition, I have another commitment, that is, the supersonic passenger aircraft produced by Dongchen itself will only be operated by Dongchen's own airline, and at that time, Dongchen will become the only airline in the world to operate supersonic passenger services, perhaps in the near future, everyone will have the opportunity to take Dongchen's supersonic passenger aircraft to shuttle around the world, cruising at a speed of 3,600 kilometers per hour is our commitment, please wait and see!" (To be continued.) )