What does car navigation ACC stand for?

Don't you know anything about cars? I know nothing about your car. Because of this little trouble, we need to go to the garage to see what's wrong. Money is a problem on the one hand, and time is also a reason on the other. Then, friends need to know something about cars. Today, the car editor will give friends a brief introduction about what car navigation ACC stands for.

What does car navigation ACC stand for? It stands for.

ACC is the key door switch, and ACC status is the key door switch status.

GPS is the abbreviation of English Global Positioning System. The Global Positioning System (GPS) was started as a project of the US military in 1958 and put into use in 1964. In 1970s, the US Army, Navy and [/K0/] armed forces jointly developed a new generation of satellite positioning system GPS. The key use is to provide real-time, all-weather and global navigation services for land and sea [/k0/], which is used for some military purposes such as intelligence gathering, nuclear explosion monitoring and emergency communication. After more than 20 years of research and experiments, it cost 30 billion dollars. By 1994, 24 GPS satellite constellations have been deployed, covering 98% of the world. In the field of machinery, GPS has another meaning: geometric product specifications (GPS for short). In addition, it also represents gigabits per second (GB/ sec). Gps (Generalized Processor * * *) is a special term for processor * * * and network service quality adjustment.

What does car navigation ACC stand for: car navigation function

Support CMMB digital TV

It can support CMMB digital TV, watch high-definition programs at any time while driving, and learn the latest information in the world at the first time to meet all the needs of users.

True color HD digital screen

Real high-definition digital screen, 800*480 resolution, the latest display processing technology, symptom color and high dynamic contrast have reached an excellent level, presenting you with high-definition image quality and enjoying a high-quality visual feast.

Intelligent operating platform

The integrated development of WindowsCE intelligent operating system based on ARM architecture makes the system run more stably, quickly and powerfully.

Super-strong electronic shockproof

The unique on-board anti-vibration technology ensures the normal operation of the system during the driving of the car from both hardware and software, and ensures that DVD reading will not stop and the use will be smoother.

Rear view bracket for reversing

Support reversing rearview, solve reversing problems for small partners, prevent troubles such as car washing, and bring more value to small partners.

Support dish box function

Solve the trouble of navigation modification, support the function of DVD/CD multi-disc box, play for a longer time, and prevent the unsafe hidden trouble caused by changing discs while driving.

One-button Bluetooth hands-free

Built-in Bluetooth hands-free device can realize one-button call function during driving, so that both hands can concentrate on driving during driving, and can also talk while driving safely.

FM-AM radio

Built-in super radio module, supports FM/AM broadcasting, listens to the latest real-time road conditions, and runs smoothly throughout. Support automatic storage of 30 radio stations, eliminating the trouble of searching channels.

Multimedia playing

Support DVD/VCD/CD/MP4/MP3 and other media playback, and support remote control such as DVD/ full-screen touch adjustment. The latest multimedia digital processing technology and excellent audio and video playback bring rich and varied entertainment to the boring driving process.

Digital bass and bass adjustment

Digital bass processing technology can flexibly adjust the center frequency of bass and bass, choose the best listening position, and meet the different listening enjoyment of small partners.

Sd /USB support

The SD/USB interface is reserved to support the loading of large-capacity network multimedia resources such as SD/USB/ hard disk, so as to easily get more entertainment and experience the happy life brought by the car navigation system.

Real-time 3D map navigation

The latest 800*480 resolution high-definition 3D realistic map covers 7.5 million service information points in 1200 cities nationwide, and supports various safety tips (such as speeding, traffic lights, electronic eyes, etc.). ).), and automatic route planning, so that you can drive unimpeded.

What does car navigation ACC stand for: principle

Twenty-four GPS satellites orbit the earth with a period of 12 hour at a height of 12000 kilometers from the ground, so that more than four satellites can be observed at any time and any place.

Because the position of the satellite is accurate, we can get the distance from the satellite to the receiver in GPS observation. With the help of the distance formula in three-dimensional coordinates and three satellites, three equations can be formed to find out the position (x, y, z) of the observation point. Considering the error between satellite clock and receiver clock, there are actually four unknowns, namely X, Y, Z and clock difference. Therefore, the fourth satellite should be introduced, and the latitude, longitude and elevation of the observation point can be obtained by transforming it into four equations to solve.

In fact, the receiver can usually lock on more than four satellites. At this time, according to the constellation distribution of satellites, the receiver can be divided into several groups with four satellites in each group, and then the group with the smallest error can be selected by algorithm for positioning, which will improve the accuracy.

Due to the error of satellite orbit and satellite clock, the relationship between troposphere and ionosphere and the influence of artificial SA guarantee policy, the positioning accuracy of civil GPS is only 100 meters. In order to improve the positioning accuracy, differential global positioning system (DGPS) technology is widely used, and a reference station (differential substation) is established for GPS observation. With the precise coordinates of the known reference station, it is equivalent to the observed value, and then a correction number will be obtained and announced to the public. After receiving the correction number, the receiver made a good comparison with its own observation value, eliminated most of the errors and got a fairly accurate position. Experiments show that with the help of differential global positioning system, the positioning accuracy can be improved to 5 meters.

The core of vehicle navigation system consists of navigation host and navigation display terminal. The built-in GPS antenna will receive the data information of at least three of the 24 GPS satellites around the earth, so as to determine the current position of the car. The location coordinates determined by the navigation host through the GPS satellite signals match with the electronic map data, and the accurate position of the car in the electronic map can be determined.

On this basis, the functions of driving navigation, route recommendation, information inquiry, audio/video/TV play will be realized. The driver can drive easily just by looking at the picture on the display screen, listening to the voice prompts and manipulating the remote control in his hand.

After reading the profile of Bian Xiao, do you need to know what the automatic navigation ACC stands for? So, do your friends like the knowledge that Bian Xiao Auto introduced to your friends today? Che Bianxiao believes that these content knowledge partners must understand well, which is still very important for us to solve problems. Finally, I hope that the introduction of automobile system can solve the problem for friends.

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