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Spacecraft flew hundreds of thousands to hundreds of millions of kilometers from the earth, injecting speed when the size and direction of a slight error, arrived at target planets will appear large deviation error, for example, when Mars probe injecting speed 1 m/s speed (about one over ten thousand), arrived at Mars, about 100000 km distance deviation. Therefore, precise control and navigation must be carried out during the long flight. Flying to the moon is usually controlled by the orbital control system of the ground and space probe (see orbit control). Interplanetary flight distances, radio signal transmission time is long, the real-time remote control, can't so planets and interplanetary spacecraft orbit control system shall have the ability of autonomous navigation (see interstellar travel navigation and control). The United States, for example, "pirates" spacecraft in space flight of more than eight hundred million km, for 11 months of 2000 times of autonomous orbit adjustment, the final surface to achieve a soft landing on Mars, placement accuracy up to 50 km. In addition, in order to ensure the accuracy of the orbit control engine, the communication antenna is always aimed at the earth, and other systems work normally, and the detector has the autonomous attitude control ability
Flavor chance to the rescue:
You may have wondered how your PC acquires the opportunity to identify diverse hardware components like digital camera models, printers or plotters, and flatbed scanners attached with it. The answer is a smaller, almost magical software package code referred to as the device driver that conveys information about how to interact with a specific device for your PC.
Second, public security, transportation, industry and commerce, taxation, forestry, animal husbandry and other departments need in provincial roads, county roads, and adjacent to the border provinces (autonomous regions) of setting up checkpoints on roads (card), must be approved by the provincial people's government. The checkpoints (CARDS) set by local and local departments are illegal, and people and vehicle drivers may refuse to accept their inspection.
Protocol timing indistinguishable from the real VAG/VAS tool. Works reliably even with “difficult” control modules for example the 1991-1994 1Z Audi TDIs along with the 1993-1994 Audi 2.6L with Hella ECU. Built-In VAG-Saver functionality — instantly alerts an individual if either the K/K1 line or L/K2 line is shorted to Ground or Vbatt.
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