Back to the Republic of China to be a editor

All of this started in 1958, when the XS3725 student machine appeared on campus, and everything seemed to be on the "accelerated hang", swishing and swishing.

Tang Hua connected to the file server of Beijing Institute of Electronics and Information, Huang Kun's laboratory, where various project documents are arranged neatly, and it is clear at a glance what projects his laboratory and his Department of Microelectronics are working on.

After the three members of Team X separated, Xie Xide focused on chip manufacturing technology at Fudan University, and Huang Kun focused on chip design at Beijing Institute of Electronic Information.

In Huang Kun's project documents, Tang Hua found the "Digital Signal Processing Chip (DSP)" project, and then checked the performance and completion progress of the on-board high-speed DSP.

The first photographic reconnaissance satellite launched in July had normal optics and a normal CCD (although the pixels were lower), but the computing power of the chipset failed to meet the target, which caused the satellite to always appear Lag, if the camera takes pictures at 7% full rate, then the satellite images cannot be downloaded within the stipulated time.

This cannot be the case with the official version of the photo reconnaissance satellite.

Chapter 55, Whoever Controls the Food Controls Everything

"Washington Post Telegraph, Sept. 9: Congress passes bill authorizing State Department to review food export policy."

"According to the new bill of Congress, the US's foreign food exports and food aid will be reviewed by one office. The State Department has interviewed the US Adami ADM, Bunge, and Cargill. The three companies promised to increase food exports in the future On the matter, follow the policy of the U.S. State Department."

"Through diplomatic channels, the United States negotiated with Malaya, Thailand, Indonesia, and South Vietnam on grain export policies."

"According to news from Agence France-Presse, Louis Dreyfus, France's largest grain exporter, has signed a cooperation agreement with the United States to cooperate with the United States' grain export policy to a certain extent."

"A State Department official, who asked not to be named, said that President Kennedy is likely to formally sign off on the policy in September, which could be named 'Grain for Freedom.' Specifically, some countries need to Negotiate with the United States and listen to the views of the United States on issues of armaments and internal affairs."

"This policy is obviously aimed at China. According to reports, China's grain production in 1959 and 1960 did not reach the expected level, and grain production may not recover significantly in 1961. In 1960, China imported 410 tons of grain and corn, about 2 percent of its domestic grain production."

"It is estimated that China's current per capita food possession is less than 300 kilograms, which is lower than the world average. China should have imported more food to meet the needs of the urban population. In 1960, the World Grain Trade Research Institute estimated that if China and the United States Trade continues to pick up, and China will eventually import 500 to 600 million tons of grain from the United States every year."

"After the introduction of the grain export restriction policy, the passage of grain exports from the United States to China may be completely closed. At that time, more arable land in North America will enter a long fallow period, and the interests of farmers will also be affected to varying degrees."

……

When the chairman met with Montgomery last year, he said that the United States opposed the Soviet Union in 1960, and it will probably oppose China next year (1961).

However, Khrushchev stepped in and made the United States have to deal with the Soviet Union in the first few months.After the Berlin Wall was built, in September, it really started to move.

"The contract we signed with Thailand is to import 80 tons of rice. Fortunately, there are two seasons of early rice and late rice. In August this year, 8 tons of early rice have been shipped back to China, but the 30 tons of late rice is estimated to take a lot of trouble."

"The grain import agreement signed with Indonesia is 120 million tons of rice. Now 50 tons have arrived, and 70 tons are yet to be determined."

"Now only the food agreement with Vietnam will not be affected."

Ye Jizhuang reported to the Prime Minister the possible impact on grain imports.

In the 70s, Kissinger once said: "If you control oil, you control all countries; if you control food, you control all people."

During the Cold War, food aid was a sharp weapon for the United States to control its younger brother. In the late 70s and 80s, the United States also used food trade to block the Soviet Union. The Soviet Union finally agreed to sign the INF Treaty, which also has a lot to do with the United States using food to coerce and lure.

Prime Minister: "Vietnam is reliable, but we already import a lot of rice from Vietnam. If we import more, they will not have enough food."

Ye Jizhuang: "I don't know if the agricultural department has statistics. How is the agricultural production this year?"

Prime Minister: "The specific data is still being investigated, but it is better than last year. Last year we imported 410 million tons of grain. If we can buy 200 million tons from the international market this year, it will actually be enough."

……

general staff.

It has been almost two months since the launch of the "Gaofen-[-] Scientific Experiment Satellite". After the successful launch, Xinhua News Agency uniformly called it a "Scientific Experiment Satellite". .

For this satellite launch, the launch vehicle is fine, and the satellite is basically fine, except that the data processing capability of the chip is a bit laggy when the camera is shooting continuously at high speed.

"Gaofen-[-] adopts digital imaging and digital transmission system, single-band imaging of visible light. It is not only the first time to use CCD digital imaging technology, but also takes color photos, and the image information of the three primary colors is respectively captured by the three CCDs by the spectroscopic system. , synthesized into color photos at the ground station."

Gaofen No. [-] is obviously an asset under the Ministry of Geology, but its priority for use is obviously the General Staff.It is not that the Ministry of Geology does not have the right to use it, but it can only be transferred when the general staff is free.

Wang Xiji brought a stack of huge photos to the general staff, and Su Yu stared at the photos for a long time.

"The CCD pixel number of Gaofen No. 720 is 720x3. When the lens is pulled out to the longest, the ground area captured is 3 kilometers by 4 kilometers. That is to say, one pixel of it represents an area of ​​about 4 meters by 50 meters on the ground. This Minister Tang is not satisfied with the number of pixels, our next-generation satellite CCD will expand from the current 100 pixels to 1000 million pixels, that is, to capture 1000x[-] dot matrix graphics at a time."

Suyu: "Oh, the map is very clear now. Also, the place shown in the photo here seems to be more than 3 kilometers long and wide?"

Wang Xiji: "After the photos taken by the satellite are transmitted to the ground, in addition to synthesizing color photos, we also stitch multiple photos together. For example, in this photo, 400 digital photos taken by Gaofen-57 are actually stitched together, so one picture The zone width shown here is 57x[-] km."

"In addition, these 400 photos are a combination of photos taken by Gaofen-[-] when it passed over the target area twice. The inclination angle of the ground is different each time the satellite takes pictures, so the stitched photos have different areas in different areas. Differences in light and shadow, such as the shadows of buildings on the ground are not exactly the same. In addition, there are slight scale distortions in different photos."

Su Yu: "It's too polite, it's already very good. ... The South Vietnamese army didn't pay enough attention to Xishan. Once the North and the South go to war, this is the military support point of Quang Tri Province. No. 9 from Kalu to Xishan The road conditions are also very poor.”

Gaofen No. [-] was used to shoot domestic scenes during the test, and it will be used to shoot foreign countries for the first time when it is officially launched.The shooting location was determined by the General Staff: Xishan, a military pass in the Republic of Vietnam (South Vietnam).

Zhang Zhen: "Chief Su, there are really not many South Vietnamese troops stationed in Xishan. Look here, in fact, only this area looks like a military camp. These, and these, are all village houses. Roughly estimated, there are only three South Vietnamese troops stationed here. Thousands to 5000 people."

Su Yu: "The ground here looks like a howitzer emplacement."

With the clarity of the photo now, it is still very difficult to directly identify the howitzer position. Su Yu and Zhang Zhen identified it on the map for a long time, and after discussion, they finally decided that the green field was slightly yellowish and 200 meters long. The area on the left and right should be the pit where the South Vietnamese artillery unit dug the artillery here not long ago.

Zhang Zhen: "I can barely distinguish it. But it's hard to be more detailed."

Suyu: "If you can distinguish the trenches on the ground, that would be great."

Wang Xiji: "When the quality of satellite imaging in the future is better, it should not be a problem to find trenches."

Su Yu was fascinated by looking at the map of Xishan area, without turning his eyes for a long time, while Zhang Zhen noticed the date marked on this stack of photos.

"Today is September 9th. Of the photos you gave us, the latest one is from September 8th?"

Wang Xiji: "Yes, all the graphic data was received on September 9th, and the ground station used a large-scale graphics computer to process and synthesize it. After the synthesis was completed on September 5th, it was printed and brought here."

Zhang Zhen: "If we want to see photos of a certain place, how fast can we go?"

……

In the western suburbs of Beijing, Military Satellite Application Center.

This is a unit of the army, but there are still many employees of the Electronic Information Industry Bureau in civilian clothes who are working, mixed with those in military uniforms.This situation will continue for about a year, and the work will not be handed over until the General Staff gradually absorbs military school graduates and the operation team is fully established.

When Tang Hua walked into the military satellite center, Liu Shaonong, the Chief of Intelligence of the General Staff, had already arrived. The two waited for a while, and the cars of Su Yu and Zhang Zhen also arrived.

"Gaofen-[-] does not use film, so when it shoots the ground, it is 'press the shutter to see the picture', and then if the communication conditions permit, it can be transmitted to the ground station immediately. Because the current graphic information is still divided into three primary colors. The ground station needs about a few minutes to half an hour to synthesize the pictures. If you don’t stitch the graphics, this is the fastest speed to see the battlefield.”

Tang Hua introduced the working principle of Gaofen No.[-].

"Gaofen-[-] will pass over Kaohsiung Port today. We can use the Kaohsiung base of the East China Sea Fleet to demonstrate the fastest image acquisition. In fact, this satellite was launched when I was in the Soviet Union. Today is the first time I have seen its demonstration world." data transmission."

A group of people entered the graphics processing office of the Military Satellite Center, and Zhang Zhen first called the Kaohsiung Base of the East China Sea Fleet.

"What ships are there in the port now? Berths 106 to [-], and berth [-] is the [-] ship 'Taizhou'?... You don't need to report the name of the ship, just the type of ship."

Zhang Zhen put down the phone, "Chief Su, there is a Kirin at berth 01 in Kaohsiung Port, two [-] frigates at berth [-] and [-], an American escort destroyer at berth [-], and berths [-] and [-] are empty."

Look at the time, Gaofen No. [-] is about to pass the top of Kaohsiung Port.