Bu Qingjun s contribution to the birth of China s Beidou navigation satellite

China's Beidou navigation satellite is composed of synchronous satellites and earth-orbiting satellites. It has a navigation and communication function.

Application satellites. Anyway, how many levels have you answered?

It belongs to a communication satellite...

It's not remote sensing...

16 Branch, April 14, 2007 04:11 Long March-3A The first Beidou navigation satellite (M1) Beidou-2.

April 15, 2009 Long March-3C The second Beidou navigation satellite (G2).

January 17, 2010 The third Beidou navigation satellite (G1).

On the night of June 2, 2010, the fourth Beidou navigation satellite (G3).

05:30 on August 1, 2010 Long March-3A 126th Beidou Navigation Satellite (I1).

November 1, 2010 00:26 Long March 3C 133rd Beidou navigation satellite (G4).

December 18, 2010 04:20 Long March 3A 136th Beidou navigation satellite (I2).

April 10, 2011 04:47 The 137th The eighth Beidou navigation satellite (i3).

July 27, 2011 05:44 The ninth Beidou navigation satellite (I4).

December 2, 2011 05:07 The tenth Beidou navigation satellite (i5).

February 25, 2012 00:12 a.m. Long March-3C The 11th Beidou navigation satellite.

April 30, 2012, 4:50 a.m. Long March 3B, 10.

2. The thirteenth Beidou navigation system networking satellite ("one arrow and two satellites").

September 19, 2012 3:10 PM LM-3B 10.

4. Fifteen Beidou navigation system networking satellites "one arrow and two satellites" [5]).

At 23:33 on October 25, 2012, the 170th Long March-3C was the 16th Beidou navigation satellite.

16 of them are ready for navigation.

Yes China plans to cover the Asia-Pacific region around 2012 and the whole world around 2020. China is implementing the construction of the Beidou satellite navigation system, and has successfully launched five Beidou navigation satellites. According to the overall plan for system construction, around 2012, the system will first have the ability to cover positioning, navigation and timing, as well as short message communication services covering the Asia-Pacific region; Around 2020, the Beidou satellite navigation system covering the whole world will be built.

Hehe, I feel that China still has a future in this regard.

Yes, by 2012, it will cover the Asia-Pacific region.

OK. Now it's possible for the whole of the Asia-Pacific region. The accuracy for civilian use is not high, and it will get better and better in the future.

No, only the signal could be received and recorded by the United States. But it is impossible to decipher, how can it be so easy to crack the password. In World War II, if the United States had not obtained the Japanese Navy's codebook from a wrecked Japanese submarine by accident, how could it have known that the Japanese Navy was going to attack Midway Island after cracking it through reconnaissance radio signals.

Don't believe in the spy movies on TV, it seems that as long as you are smart, you can crack a password in two or three days, it can be broken so easily, and the password needs to be used for a p.

There is no advantage over others. It's just that we can no longer use other people's to navigate. Moreover, militarily, we finally have our own "Beidou" guided missiles and bombs, which are not disturbed by any weather, smoke, artificial electronic interference, and the strike accuracy is quite high.

Moreover, it is possible to find out where any person, car, ship, and plane equipped with the Beidou navigation system is. It is convenient for detection, strike, rescue, route arrangement, and so on.

It's just that it's just now possible to position itself in Asia, and it's still too early to achieve global positioning.

At present, the number of our Beidou satellites is too small to become a global coverage network, so it is not of great use, let alone any advantages at all.

There is no advantage, people have used it for decades, accumulated a lot of experience, if you insist on the advantage, that is, this thing is our own, we can control it, more than other people's use of rest assured,

GPRS Global Positioning. A system consists of multiple satellites. Can be used for military and civilian positioning and guidance. Such as precision strikes by missiles. Positioning at sea or in the field. However, China's accuracy is far less than that of foreign countries.

You wrote: What is the effect of this satellite? Or does it do something?

In case of a war between China and the United States, if the United States does not give you GPS signals, you will be an orangutan and his brother (waste), but the speed of this game should be slower, and it takes at least 24 to achieve global positioning, and it is best to have 48.

The GPS satellite navigation system in the United States has long been mainstream, with 24 satellites deployed and a global coverage rate of 98%. Many countries around the world rely on GPS for positioning and navigation, and China has also relied on the GPS system of the United States for many years.

Beidou-3 launched 19 satellites in 2018 a year, and now it can be initially geographed, but there are still the last six Beidou satellites to be launched before 2020, and the Beidou navigation system will be completely perfected by then.

On the occasion of the 70th anniversary of the founding of the People's Republic of China, the Beidou Satellite Navigation System mission has been reported again. At 5:10 a.m. on September 23, China successfully launched the 40th with the Long March-3B carrier rocket (and the supporting Yuanzheng-1 upper stage) at the Xichang Satellite Launch Center in the form of "one rocket and two satellites".

7. Forty-eight Beidou navigation satellites.

How many are you?

As of December 16, 2019, there are 53 pieces.

As of November 2019.

Now it's the 49th.