Chapter 161 Main Course

After Cao Shen came to this "Guangming Community" today, he asked the system to open the "high-precision map" to check it out.

In this map, it is clearly listed that this is the office location where the Science and Technology Commission usually resides.

According to his and Xiao Gang's original plan, today he would explain the source of his technology and the use plan.

Cooperate with the financial department to conduct personal credit investigation, cooperate with the public opinion department to make a white list, open source NLP and search technology to the science and technology department, and avoid being monitored on the security side. All things will be solved satisfactorily.

But after seeing the Science and Technology Commission, Cao Shen suddenly had an idea.

Use high-precision maps as a guide to "blow up" the vigorous old man.

It can be said that whether it is high-precision maps, autonomous driving or new energy vehicles.

Cao Shen said a lot, and the ultimate goal is for this old man!

Now the appetizer is finished, and the old man speaks.

The main course is here!

Cao Shen faced the vigorous old man and said seriously:

"In the future, high-precision satellite positioning is indispensable for the realization of true autonomous driving!"

"Oh?" The vigorous old man stopped his hand from picking up the teacup. Aviation, aerospace, and military industry are all his business.

Cao Shen looked at him as if he saw a mushroom cloud.

This old man is in charge of launching rockets and satellites!

Mushroom Cloud looked at Cao Shen with interest and rolled up the sleeves of his shirt:

"Come on, tell me more about it."

Cao Shen said:

"When autonomous driving reaches L3 and above, the requirements for accuracy and stability gradually increase.

When using cameras and radars, these sensors will be affected in the recognition of the surrounding environment and lanes in bad weather such as rain, snow, fog and haze.

In addition, in laneless lines and open spaces, due to the lack of relatively easy-to-identify reference objects, cameras and radar sensors cannot make accurate relative positioning.

At this time, satellite high-precision positioning can play a huge role.

In addition, satellite high-precision positioning can save the computing power of the autonomous driving system to a certain extent.

Cameras and laser radars use image recognition and laser point data collection respectively. The storage and computing power of both are very large, which will directly increase the difficulty of commercialization.

Satellite positioning can accurately locate the image and radar information when matching them with high-precision maps, without calling the image database of the entire road or the entire city. Only a relevant section of data needs to be called, which greatly reduces the amount of storage and computing. "

Mushroom Cloud frowned slightly, looked at Cao Shen and said:

"Satellite navigation single-point positioning is to determine the four variables of latitude, longitude, altitude and time through the communication between the receiver and at least four satellites, so as to locate the position of the receiver.

However, due to the interference of atmospheric ions, the positioning accuracy is only at the meter level.

At present, the global positioning accuracy of the US GPS is less than or equal to 9 meters horizontally and less than or equal to 15 meters in elevation at a 95% confidence level.

Our country's "Guide" satellite navigation and positioning system currently has an accuracy level of 10 meters and an elevation of 10 meters in the Asia-Pacific region.

Even if we plan to achieve an accuracy range of 5 meters horizontally and vertically in the domestic coverage area within ten years, this meter-level accuracy cannot meet your needs for autonomous driving.

For autonomous driving, I estimate that the accuracy must be at least centimeter-level.

Of course, the US GPS is divided into military P code and civilian C/A code, corresponding to the precise positioning service PPS and standard positioning service respectively. SPS, the positioning accuracy of the civil code is much lower than that of the military code.

But obviously, the military code is only provided to the US military and authorized agencies.

If other countries use GPS, they can only rely on the civil code to achieve positioning and navigation services, and you can't use it. "

Cao Shen smiled and said:

"It is true that the meter-level accuracy of GPS civilian use cannot meet the needs of autonomous driving.

But this is an opportunity for Dongguo satellite navigation and positioning!"

"Oh? How do you say!" Mushroom Cloud was very interested.

You know, the first GPS satellite was first launched by the United States in 1989.

And Dongguo's "Guide" satellite was not released and put into use until 2000.

This difference of eleven years has allowed GPS to take the lead and currently occupy more than 95% of the global market share.

Even now, GPS has become a synonym for satellite navigation, and many people don't know that it is from the United States.

In fact, the correct abbreviation for the global navigation satellite system is GNSS, Global Navigation Satellite System.

There are currently four major navigation satellite systems in the world, namely the US GPS, Russia's Glonass, the EU's Galileo and the East's "Guide".

Now the US GPS is almost the only one in the world, and they have long been deeply bound with chip manufacturers, and the entire set of technology is integrated into the products shipped by chip manufacturers.

GNSS is a major event with a high degree of national security strategy. Although the East has vigorously developed the "Guide" navigation system, it has missed the opportunity to enter the market and it is difficult to grab market share from GPS.

Thinking of this, the expression on Mushroom Cloud's face was very lost.

Cao Shen saw Mushroom Cloud's expression, and he certainly knew the importance of a country's GNSS strategic position.

If all citizens use the positioning and navigation services of other countries, they will face the risk of being interfered with or even shut down at any time if there is a problem in the military and other security fields.

In April 2018, the United States intervened in the Syrian conflict and the US military directly shut down the civilian GPS signals in Syria, which directly affected the weapons and positioning devices guided by GPS signals.

GPS signals are only used by the US military itself, and they are high-precision P codes.

Therefore, having an independent satellite navigation system is a safe choice for the country.

Not only for internal use, but also for citizens to use as much as possible.

It is not so safe for all the location data of citizens to be known and controlled by other countries.

But if you want to use it for all citizens, you must have a strategy.

Cao Shendao:

"The navigation system on mobile phones is now monopolized by GPS.

Moreover, mobile phone chip companies have more advantages than traditional satellite navigation companies in terms of mobile phone chip function integration, and mobile phone application development companies have more advantages than traditional satellite navigation companies in terms of software development and application.

This makes the market share of satellite navigation services on the mobile phone side only play the role of technology providers, and the technology licensing fees that can be earned are very small.

At present, mobile phone GPS is no longer a separate chip, but an IP intellectual property right integrated into the CPU.

If "Guide" wants to enter the mobile phone market, it must negotiate with international giant mobile phone chip manufacturers for built-in.

But most of these manufacturers are American companies, and it is difficult to enter.

And I It is believed that the revenue brought by in-car navigation and autonomous driving to satellite navigation will exceed that of mobile phones in the future.

Because, unlike mobile phones, navigation is an auxiliary function.

In future cars, especially for autonomous driving systems, navigation is a core function.

Moreover, the unit price of cars is higher, and the price tolerance of navigation systems is far higher than that of mobile phones.

Our domestic "guide" should take advantage of the development of car assisted driving and autonomous driving, seize the opportunity, enter the automotive industry chain as soon as possible, and deeply couple with the industry chain. "

"But I just said that satellite navigation has accuracy problems and is not suitable for autonomous driving. Do you have a solution in this regard?"

Mushroom Cloud stood up directly, sat next to Cao Shen, grabbed him and asked anxiously.

Cao Shen nodded:

"Yes! I have tested it and it can achieve millimeter-level accuracy!"

Mushroom Cloud was obviously excited and held Cao Shen's shoulders tightly:

"How did you do it!"

Cao Shen smiled and said:

"Build a new ground-based augmentation system!

I know that "Guide" now has a satellite-based augmentation system, and the traditional ground-based augmentation system is also under construction.

My suggestion is to introduce RTK carrier phase differential technology into the current traditional ground-based augmentation system.

Build a fixed reference station on the ground to obtain the error during satellite positioning measurement.

The differential correction result after comparing the satellite positioning coordinates with its own precise coordinates is sent to the GNSS receiver on the car.

The GNSS receiver not only receives In addition to receiving data from ground base stations, satellite observation data must also be collected, and differential real-time calculations are performed again in the system.

Using this method, the positioning accuracy can reach up to 2 cm.

If it is combined with other sensor data, the accuracy of our experimental results can reach the millimeter level. "

Mushroom Cloud nodded thoughtfully, and after a moment, he said:

"Xiao Cao, we will definitely test the method you mentioned as soon as possible.

Once we find that it can really achieve the effect, we will roll out the establishment of ground base stations across the country! "

RTK carrier phase differential is actually a very mature technology, but I didn't think about doing autonomous driving before, so there were not a lot of scenarios that required positioning to the centimeter level.

Therefore, the previous ground base station did not add this.

It's not difficult, I believe there will be results soon.

Cao Shen continued:

"The GNSS receiver in the car needs your 'Guide' positioning and navigation chip because it needs to receive data from ground base stations and satellite data at the same time.

And the GNSS receiver can be installed in the car before or after it leaves the factory.

Since cars involve life safety, the country can even force promotion.

This will be an important opportunity for 'Guide' to enter the consumer field.

Besides, GNSS receivers can be made into complete machines by navigation companies. Now the price of ordinary GNSS receivers abroad is about 20,000 yuan per set.

Even if the price will drop in the future as more manufacturers enter, it is far higher than the profit of a few yuan or even a few cents by providing IP technology for mobile phone chip integration.

For this reason, a group of companies specializing in GNSS can also be born. SS receiver companies.

In addition, since this method can achieve accuracy in the centimeter range or even the millimeter range, consumers will have more demands after a good experience.

This can also force mobile phone manufacturers to integrate the IP of "Guide" in mobile phone chips, so that the market share of "Guide" can be increased.

When "Guide" enters the GPS market, it can be compatible with GPS and even other countries' navigation systems, thereby further expanding its market share.

As long as our technology and product experience are better than those of other countries, compatibility will gradually evolve into encroachment. I believe there is a good chance for this. "

China's Beidou, which was originally in the world, already has 55 satellites in 2020, making it the system with the most satellites in the global navigation system.

Even though GPS occupied a better orbital position earlier because it was launched earlier, China has also overcome considerable difficulties and achieved the same level as GPS in terms of technical indicators.

Even in the Asia-Pacific region, especially in China, it has higher accuracy than GPS.

"Okay! It's really good!" Mushroom Cloud patted Cao Shen's shoulder kindly:

"He is indeed the most powerful entrepreneur on the Internet. He has a strong understanding and application of technology and a very good market strategy.

Young man, you are truly a rare talent! "

Mushroom Cloud is very excited!

The country has spent a lot of money and research and development efforts to put the "Guidelines" in the sky.

But there is no way to implement it in the market.

They tried many ways to do this, but with little success.

Cao Shen undoubtedly pointed him out the practical direction for the future.

It is not only a direction but also can greatly improve the product experience. What’s more, the automobile market is a direction with higher revenue value than mobile phones, and it can even counterattack the mobile phone market!

As a result, a large number of excellent companies will be born in the upstream and downstream of the industrial chain.

Ground base station construction, various transceiver equipment, boards and chips in the equipment, data platforms and various application-level services.

It can be said that the entire "Guide" market ecology can be revitalized!

Of course, the marketization of the "Guide" has more national strategic significance.

Mushroom Cloud narrowed his eyes. If he can capture the mobile phone market in the future, it will be a major strategic victory to go international and give people around the world the opportunity to use Dongguo's GNSS!

The central government's One Belt and One Road strategy can even establish "ground bases" in other friendly countries. This will be extremely valuable data and strategic extension!

Mushroom Cloud looked at Cao Shen and really liked him!

"Xiao Cao, when we build the website, you are always welcome to inspect the work!

Give us more comments and suggestions!

If you have any needs, you can ask at any time! "

As he spoke, he took out his mobile phone from the "mobile phone bag" on his waist:

"Come on, old man, I also have a friend. Let's add one so we can keep in touch at any time!"

"Yes, yes! We'll add them later! Youxin is very convenient now. From now on, you can even make video calls and send messages!" The tall man also took out his mobile phone.

The round-faced lady hurriedly said: "You guys are added, we will form a group later. I think a lot of Mr. Cao's work is something that our various departments can communicate and collaborate with together. This is convenient!"

Xiao Gang looked at Cao Shen, shook his head slightly and smiled:

This kid!

Cao Shen strengthened his friendship, grabbed Mushroom Cloud's arm and said:

"Leader, I have something very important that I want to get your support for..."

"It's easy to talk, Xiao Cao, do you have any other good ideas?" Mushroom Cloud said with a smile.

Cao Shen stood up slowly, glanced around the crowd, put his hands on the edge of the table and said:

“Today, more than 70% of the world’s geographical space, involving 3 billion people, still lacks Internet coverage.

Traditional terrestrial communication backbone networks are difficult to lay out and have high operating costs in harsh environments such as oceans, deserts, and remote mountainous areas.

There are practical obstacles to extending and popularizing traditional communication backbone networks in areas with low Internet penetration.

In this regard, I propose that our country establish a low-orbit satellite communication network to achieve seamless coverage of the global Internet! "