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Chapter 1464: Frequency Band Battle

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    "Yes, Mr. Zhuang, so the headquarters hopes that you can come over and sit down with other relevant parties to discuss what to do next!"

    The headquarter leader on the other end of the phone didn¡¯t shy away from it and asked Zhuang Jianye to hurry over.

    Fortunately, Zhuang Jianye has moved the headquarters of Ascendas China to the capital. It takes less than half an hour to get on the bus and arrive at the headquarters. If this is in Xingzhou, even if you have your own business jet, the flight time alone will take one and a half hours, plus  The expense of going to the airport and checking before boarding was lost for most of the day.

    ????????????????????????????????????????????????????????????????????????????????????????????????????? Otherwise, when the enterprise has grown to a certain degree, the headquarters shall speak the capital dialect, it is just to make it easier to deal with such an emergency, after all, it is a big business involving an output value of hundreds of billions, and it cannot be delayed for half a minute.

    So Zhuang Jianye agreed without thinking, then gave a few instructions to his administrative team, and hurried to the headquarters with his two assistants.

    Because he had complete documents and special instructions, Zhuang Jianye and his party arrived at the headquarters without any hindrance. They soon arrived at the multi-functional conference room on the 7th floor. As soon as they entered, Zhuang Jianye noticed that the atmosphere was a bit dignified, so he  It seems like there is an inexplicable chill in Beijing in December now.

    Zhuang Jianye first said hello to the head of the headquarters on the main seat, then found an acquaintance to sit down next to him and asked in a low voice: "What exactly is going on?"

    The other party was the person in charge of an aerospace research institute. When he heard this, he shook his head with a confused look on his face: "I just heard that the navigation satellite project is going to be shelved. I don't know the rest. What news do you have over there?"

    "same as you¡­¡­"

    Zhuang Jianye responded, then frowned: "It stands to reason that even if the navigation satellite project is stranded, it won't be the same at the headquarters, right?"

    The person in charge of a certain aerospace research institute nodded when he heard this: "Who says it's not the case!"

    ¡°In fact, it¡¯s not just Zhuang Jianye who thinks so, but other heads of relevant units and experts who have come over also think so.

    After all, in terms of satellite navigation, China was following two paths: international cooperation and independence.

    Foreign cooperation is naturally with Europe's "Galileo" satellite navigation program, while independence is based on domestic technology and the introduction of some foreign advanced equipment to develop domestic navigation systems.

    The first generation of domestic satellite navigation system test satellites have been successfully launched since 2002. Although there is still a big gap between Russia's GLONASS and the American GPS in terms of accuracy and timeliness, it also confirms that domestic navigation  feasibility of the system.

    Even if Europe does not provide atomic clocks, or even terminates the cooperation plan, relevant domestic units can still hold on for a while. It is not like the death of a biological father, with no hope at all.

    Of course, although Zhuang Jianye and others thought so in their hearts, no one said it publicly. After all, the headquarters has more and more sensitive information than they do. If there is any key reason that they don't know,  Woolen cloth?

    Sure enough, the staff officer at the headquarters closed the door of the conference room, and the head of the headquarters sitting at the top was not polite and said directly: "Today is December 28, 2006. The European Aviation Agency launched their first 'Galileo' navigation satellite."  Satellite, according to the news we just received, this navigation satellite has transmitted signals to the ground in four frequency bands of 1589.74 MHz, 1561.1 MHz, 1268.52 MHz, and 1207.14 MHz, and has been confirmed by the International Telecommunications Union"

    As soon as these words came out, everyone present was shocked. They finally understood what was wrong with the atmosphere at the headquarters today. It turned out that the Europeans had taken the lead in occupying the navigation frequency band.

    Like gold and other non-ferrous metals, high-quality radio frequency band resources are also limited. Especially in space outside the atmosphere, there are even fewer radio frequencies suitable for long-distance transmission.

    In order to allocate limited radio frequency resources in outer space, the International Telecommunication Union formulated rules for the use of radio spectrum signals in outer space in the 1950s.

    After decades of development, a complete system has been formed, including the applicable range of navigation signals. There are five frequency bands, namely 1164-1215 MHz, 1215-1240 MHz, 1240-1260 MHz, and 1260 MHz.  -1300 MHz, 1559-1610 MHz.

    Beyond these five frequency bands, navigation signals will interfere with other radio signals, affecting navigation accuracy.

    Therefore, if you want to ensure that your own navigation satellites can stably output navigation signals, you must limit the frequency to these five frequency bands.

    This brings about a problem that cannot be ignored. Since the navigation frequency band is limited, high-quality navigation frequencies will naturally become scarce. So what should we do?

    The method of the International Telecommunication Union is very simple and crude. In one sentence, first come first served!

    ? ??This approach may seem fair, but in fact it is most beneficial to developed countries. There is no way, no one can allow such high technology as navigation satellites to be used only by developed countries, but developing countries can't even have enough to eat, so they still launch satellites?  It's more like dreaming.

    So this set of rules of the International Telecommunications Union is basically a pattern of the strong always being strong.

    For example, because the GPS of the United States and the GLONASS of Russia have the first-mover advantage, the two countries have occupied the middle golden frequency of the five frequency bands, and the coverage area is also large, almost all frequency bands have been occupied.

    If latecomers want to realize the navigation function of satellites, they can only find some junk water in the corners of the five frequency bands that the United States and Russia do not want. At the same time, they must also try to expand the frequency band range and achieve free switching of at least four frequency bands.  Only in this way can accurate navigation signals be output to the ground without interference.

    As a result, there are only a few radio frequency bands that can achieve navigation. Therefore, the navigation frequencies expressed by several countries and regions to the International Telecommunications Union, including New Delhi and Japan, almost overlap.

    Take the four domestic navigation frequencies applied for in April 2000, which are 1590 MHz, 1561 MHz, 1269 MHz and 1207 MHz.

    ?It is almost carved out of the same mold as the 1589.74 MHz, 1561.1 MHz, 1268.52 MHz, and 1207.14 MHz of the European "Galileo" satellite navigation program.

    This is not because heroes have the same opinion, but that only these four radio frequencies are most suitable for navigation satellites to output navigation signals while trying to avoid signal conflicts with the two major series of satellite navigation systems, American GPS and Russian GLONASS.  Avoid unnecessary signal interference.

    But this brings about a problem, that is, there is a conflict between China and Europe on the signal frequency band, and one of them must give up. Otherwise, if there is a stalemate, it is very likely that both sides will suffer.

    So the Europeans extended an olive branch and said to the cute little Tutu: "Old man, what do we have to fight about? Come here with the money and do it with me. Let's work together to destroy his free and beautiful life."  Missed?"

    My rabbit is so innocent, he immediately nodded happily: "hit!"

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