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Ah Tiong Dua Dua Kee again, Laser from Satellite, finds US Navy Submarines Globally, 臭红毛你还想躲个屄? Kill by Rocket Army!

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https://mil.sina.cn/2018-10-03/detail-ifxeuwws0605793.d.html?from=wap


港媒:中国研发激光卫星反潜 可定位水下500米潜艇

参考消息 10月03日 12:11 关注
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资料图片:在阿布扎比防务展上展出的中国“沉默猎人”激光防空系统。(图片来源于网络)

参考消息网10月3日报道 港媒称,中国正在研发一种搭载强大激光器的卫星用于反潜战,研究人员希望能够利用它来准确定位海面下500米深的目标。

香港《南华早报》网站10月1日报道称,这是中国不断扩大的深海监测计划最新的组成部分,除了定位潜艇外——大多数潜艇在水下不到500米的深度活动——它还可用于收集全球海洋的数据。

青岛海洋科学与技术试点国家实验室在其网站上称,“观澜号”海洋科学卫星项目于今年5月在该实验室正式启动,旨在加强中国的全球海洋监测活动。该实验室的科学家们正在致力于卫星的总体设计,但是其关键部件正由全国20多个研究机构和高等院校共同研发。

参与该项目的研究人员宋晓泉(音)表示,如果成功,这一技术将使海洋的上层水体变得“近乎透明”。这名科研人员说:“几乎一切都将发生改变。”

半个多世纪以来,海军研究人员一直在尝试使用激光雷达技术来探测潜艇。从理论上讲,当激光束遇到潜艇时,一些脉冲会反弹回来。然后被传感器接收,并通过计算机分析确定目标的位置、速度和三维形状。

但在现实中,激光雷达技术会受到激光设备功率限制以及云、雾、水的浑浊度甚至是鱼和鲸鱼等海洋动物的影响。除此之外,激光束在不同水体间传播时会发生偏斜和散射,从而使得精确计算变得更具挑战性。


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Hong Kong media: China's research and development of laser satellite anti-submarine positioning underwater 500 meters submarine

Reference message October 03 12:11 Follow
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Profile photo: China's "silent hunter" laser air defense system exhibited at the Abu Dhabi Defense Exhibition. (Image from the network)

Reference News Network reported on October 3 Hong Kong media said that China is developing a satellite equipped with powerful lasers for anti-submarine warfare, researchers hope to use it to accurately locate the target 500 meters below the sea surface.

Hong Kong's "South China Morning Post" website reported on October 1 that this is the latest component of China's expanding deep-sea monitoring program, in addition to positioning submarines - most submarines are less than 500 meters deep underwater - it also Can be used to collect data from the global ocean.

The Qingdao National Laboratory for Marine Science and Technology Pilots said on its website that the “Guanlan” marine science satellite project was officially launched in May this year to strengthen China's global ocean monitoring activities. The scientists at the lab are working on the overall design of the satellite, but its key components are being developed jointly by more than 20 research institutes and universities across the country.

Song Xiaoquan, a researcher involved in the project, said that if successful, this technology would make the upper waters of the ocean "nearly transparent." The researcher said: "Almost everything will change."

For more than half a century, naval researchers have been experimenting with lidar technology to detect submarines. In theory, when the laser beam encounters a submarine, some pulses will bounce back. It is then received by the sensor and analyzed by computer to determine the position, velocity and three-dimensional shape of the target.

But in reality, laser radar technology will be affected by the power limitations of laser equipment and the turbidity of clouds, fog, water and even marine animals such as fish and whales. In addition, the laser beam deflects and scatters as it travels between different water bodies, making accurate calculations more challenging.


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According to public information, such experiments conducted by the United States and the Soviet Union have a maximum depth of detection of less than 100 meters.

In recent years, research projects funded by the National Aeronautics and Space Administration and the Defense Advanced Research Projects Agency (DARPA) have increased the depth of detection. DARPA has developed a device that is mounted on a reconnaissance aircraft that reliably detects targets as small as mines at around 200 meters.

According to reports, China's new devices are capable of generating high-power laser beam pulses of different colors or frequencies, enabling sensitive receivers to obtain more information from water bodies of different depths. These laser beams can be scanned over an area of up to 100 km or concentrated in a space of only 1 km.

It will be used with microwave radars installed on satellites to better identify targets. Although the radar wave cannot penetrate the water body, it can measure the surface movement with extremely high precision - so when the moving submarine produces a small surface disturbance, the radar can tell the satellite where to project the laser beam.

Zhang Tinglu, another researcher involved in the project, said that the main purpose of the satellite is to effectively detect targets in the thermocline (about 100-200 meters below sea level). Although he declined to elaborate on the role of satellites in anti-submarine warfare, the importance of thermocline to submarines is well known. The thermocline can reflect active sonar and other acoustic signals. This means that the submarine may avoid the detection of underwater sound equipment in the thermocline, but it does not escape the "eyes" of the laser beam.

Song Xiaoquan said that the goal of the "Viewing" team is to use all available sensing methods to achieve the deepest possible depth of detection.公开情报,美国和苏联进行的这类实验,最大探测深度不到100米。

近年来,美国国家航空航天局和国防部高级研究项目局(DARPA)资助的研究项目加大了探测深度。DARPA研制了一种安装在侦察机上的装置,可以在200米深度左右可靠地探测到像水雷那么小的目标。

报道称,中国的新装置能够产生不同颜色或频率的高功率激光束脉冲,使敏感接收器能够获取来自不同深度水体的更多信息。这些激光束可以扫描宽达100公里的区域,或者集中在一个仅1公里宽的地方。

它将与安装在卫星上的微波雷达一起使用,以更好地识别目标。虽然雷达波不能穿透水体,但它能够以极高的精度测量水面移动——因此当移动的潜艇产生小的水面扰动时,雷达可以告知卫星应该往哪里投射激光束。

参与该项目的另一名研究人员张廷禄(音)表示,这种卫星的主要目的是实现对温跃层(海面以下100-200米左右)内目标的有效探测。尽管他拒绝详细说明卫星在反潜战中的作用,但温跃层对潜艇的重要性已人尽皆知。温跃层可以反射主动声呐和其他声学信号。这意味着潜艇有可能在温跃层避开水声设备的探测,但却逃不过激光束的“眼睛”。

宋晓泉说,“观澜号”团队的目标是利用所有可用的传感方法来实现尽可能深的探测深度。
 

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Chinese Laser technologies are world #1



https://www.space.com/39536-laser-china-rip-vacuum-antimatter.html





Superpowered Chinese Lasers Could Soon Rip Open Raw Vacuum
By Rafi Letzter, Live Science Staff Writer | January 30, 2018 07:19am ET
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Credit: Michal Steflovic | Shutterstock.com
Physicists are getting close to building lasers powerful enough to rip matter out of a vacuum.

According to a report published Jan. 24 in the journal Science, a team of Chinese scientists is getting ready to start construction this year on a 100-petawatt laser in Shanghai known as the Station of Extreme Light, or SEL. That puts them at the front of a wide field of scientists around the world who are working to realize a prediction published in the journal Physical Review Letters in 2010 by a team of American and French physicists that a sufficiently powerful laser could cause electrons to appear out of a vacuum.

It might seem weird to imagine that electrons could appear out of empty space. But it makes a lot more sense in light of a strange claim of quantum electrodynamics: "Empty" space isn't empty at all, but rather is made up of densely packed pairs of matter and antimatter. Those pairs tightly fill up the gaps between everything, quantum electrodynamics states — they just don't interact in any noticeable way with the rest of the universe, because they cancel one another out. [The 18 Biggest Unsolved Mysteries in Physics]

So it's easier to consider that the Chinese laser won't so much create matter, as cause it to enter the world humans can perceive. Its powerful pulses of energy will cause electrons to separate from their antimatter twins, positrons, in ways researchers can detect.

Building a laser powerful enough to do this, though, is a difficult (and expensive) technical challenge. One hundred petawatts, as Science reported, is about 10,000 times more energy than there is in all the world's electrical grids combined.

A smaller Chinese laser, the Shanghai Superintense Ultrafast Laser Facility, could achieve 10 petawatts by the end of this year. (That's 1,000 times the power of all the world's grids.) So how can lasers reach these enormous power levels?

As the authors of the report in the journal Science explained, power is a function of two things: energy and time. Release a joule of energy over the course of 1 second, and that's 1 watt. Release a joule over the course of 1 hour, and that's just 0.28 milliwatts (28 hundred-thousandths of a watt). But release that joule in just 1-millionth of a second, and that's 1 million watts, or 1 megawatt.

All superpowered lasers rely in some way or another on releasing large amounts of energy over short periods of time, amplifying it and bending the beams such that all of that energy arrives at its target over the course of an even shorter period of time, the Science article reported.

By 2023, the SEL could strike targets just 3 micrometers (3-millionths of a meter, or the width of an E. coli bacterium) across with 100 petawatts of power, according to the report in Science.

For more technical details on how that laser would work, how other laser projects around the world compare and why the U.S. lags so far behind, check out Science's full report.

Originally published on Live Science.
 

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Chinese science and technology can cannibalized Chow Ang Moh alive!

Ang Moh can not run! Can not hide!
 

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Sina military military depth
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Chinese naval active shield ship radar phased array, US Aegis is forced to change blood

Sina Military October 03 09:59 Follow
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Saudi Arabia needs Chinese equipment to reverse the Yemen war situation

As the main force of the US Navy's active service, the Burke-class destroyer equipped with the Aegis system has been derived and has been in service for several batches such as I/II/IIA since its official service in the early 1990s. The latest and improved Burke III series is also under construction. However, compared to the unfinished Burke III, the biggest shortcoming of the current Burke series is that it is still equipped with the AN/SPY-1 series phased array radar developed in the 1970s. In the context of the increasing air defense and anti-missile pressure faced by the US Navy, the AN/SPY-1 series is limited by the passive phased array system, and its performance has obviously become increasingly unable to meet the needs of the US military.


The performance of the SPY-1D radar used by Burke, which is currently in service, cannot meet the requirements.

Recently, the US Department of the Navy and the Naval Sea Systems Command jointly issued a request for information to the domestic military industry, plus the market for the production of AN/SPY-6 shipborne radar hardware for the Burke III destroyer during the fiscal year 2021-2025. Research report. In this series of documents, the US Navy, in addition to mentioning the shipborne radar models that will be selected for the Burke III and Ford-level follow-up batches, is the first to propose the use of AN/SPY on the current Burke-class destroyers. -6 Active Phased Array Radar replaces the need for SPY-1D (V) passive phased array radar. This means that the Burke level, with more than 60 active duty, is likely to usher in a "big change" of the radar system in their service life.


As many as 60 Burkes have the opportunity to welcome the radar system to change blood.

In addition to the performance requirements, the U.S. Navy’s soaring action at the current Burke level is, to a certain extent, affected by the active phased array of thoughts of the Chinese Navy’s active shield ship radar. As we all know, due to the late development of the project and the latecomer advantages brought by many domestic and foreign experience references, the three-generation shield ship of the Chinese navy has started from the earliest 052C destroyer, and its supporting 346 shipborne radar has adopted advanced The active phased array system, and the 346A type equipped on the subsequent 052D type and the 346B type equipped on the 055 type, have continued this technical route. This has also made our navy a sea force with the largest number of active phased array radar shields on a global scale.


China's navy has realized all active phased arrays of shield radar

Just as a few decades ago, phased array radar antennas replaced traditional machine-swept antennas. Nowadays, the planning and design of the new generation of surface naval vessels in various countries have basically abandoned the passive phased array system in the supporting radar. The use of active phased array systems. After all, we all know that radars with active phased array systems are not only costly, high technical thresholds, and relatively strong demand for environmentally controlled cooling. The rest related to specific performance such as search distance, multi-target tracking ability, anti-interference ability and other indicators, are all better than the passive phased array radar of the same generation level. Under the premise of performance rolling, the active system replaces the passive system, no matter which country the navy appears to be logical.


The picture shows the SPY-6 active phased array radar used by the US Navy's next-generation Aegis ship.

It should also be mentioned that this new type of shipborne radar, which will be used to replace the AN/SPY-1D(V) series on the current Burke-class destroyer, is scheduled to be equipped with the AN/SPY-6 active of Burke III. A simplified shrinking version of phased array radar. Compared to the original AN/SPY-6 with 37 Radar Modules (RMA), the simplified version uses only 24 radar module components. As a result, the performance index of the simplified version of the antenna aperture shrinkage will naturally have a certain gap with the original version. As for the reason for this, it is mainly due to the fact that the Burke III of the current Burke series is not as good as the Burke III after the design. Therefore, in order to ensure the normal operation of the new radar on the old platform, it can only be chosen to simplify it.


Active Burke can only change the simplified version of 27RMA SPY-6 for various reasons.

In short, in the context that the performance of the US Navy's current Burke-class fleet is increasingly unable to meet its needs, the arrival of the simplified version of AN/SPY-6 can be a good source of energy for a new technology. Compared with the original AN/SPY-1D (V), the radar sensitivity is 12.6 times stronger, which will greatly improve the comprehensive combat level of this type of ship. At the same time, a variety of Aegis ships designed by Burke-class models around the world, such as South Korea's Sejong King, Japan King Kong and Ai's class, do not rule out the possibility of re-installing this radar in the future.


This is the success of China Aegis against Aegis

Once upon a time, the Aegis-class Aegis ship was synonymous with the most perfect ship in the world. No matter which country develops any model, it is only step by step. Until the birth of our Aegis ship, the hope of transcendence emerged. Nowadays, the service of this new generation of large-scale main battleships of 055 has finally begun to force the United States to carry out a comprehensive upgrade. This also confirms the success of China's naval construction in the past 20 years. (Author's signature: Bear)

For the full contents of "Sheathing", please pay attention to Sina military official WeChat preemptive view (see WeChat public number: sinamilnews for details), "Slinging" is a full start on Sina Weiwei official WeChat every day.

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Top Comments

If I have three million
22 hours ago Ningbo, Zhejiang
73
There are more than 60 Burke Shield ships in the US, we must follow up.

78 Tao
Tianjin 21 hours ago
32
My 055 radar is dual-frequency, and the performance of detection, tracking, and guidance is more practical. The large and thick launching barrels can be equipped with anti-missile, anti-ship and large-scale missiles. Similar dual-frequency sonar to underwater targets should also be loaded.

Benben love struggle
21 hours ago Wuhu, Anhui
27
It is necessary to consider the quantity and the quality. The more than 60 Burke Shields of the US Emperor are mostly served in the 1980s. Although they have been upgraded, considering the extent of the current advancement of electronic radar technology, China only has 10 055, 20 The 052D is enough to compete, and China is not a global strategy and does not need global deployment, so there is no need to do so much in the number of shields.
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