Chinese Laser Radar Can Detect a Needle 1 Kilometer Deep Underwater

Written by Fabio Lucas Carvalho

Published on 11/12/2024 at 00:06

Updated on 11/12/2024 at 00:08

Foto: Reprodução

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The Award-Winning Laser Radar Developed in China Can Detect Tiny Objects, Such as a Needle, at an Impressive Depth of 3,280 Feet Below Water.

A team of researchers from Xiamen University in China has developed a laser radar with impressive sensitivity, capable of identifying objects at depths of up to 1,000 meters in the ocean. The work, published in 2023, earned the team the “Best Paper Award” from Applied Optics, surpassing over 1,200 competitors.

The Innovation of Single-Photon Raman Lidar

The system presented by the team is based on single-photon Raman lidar technology. This innovative method allows for the precise detection of submerged substances, even in adverse conditions. Equipped with a low-noise detector, the device stands out for its compact size and energy efficiency.

The radar has dimensions of only 40 cm in length and 20 cm in diameter, making it easy to install on autonomous underwater vehicles (AUVs) or remotely operated vehicles (ROVs). This portability does not compromise its performance: it can detect oil leaks from up to 12 meters away with a single laser pulse.

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The Precision That Revolutionizes Underwater Research

The device’s precision has been compared to “finding a needle in the haystack.” Its ability to analyze submerged substances and map their distribution at different depths is a significant advance for environmental monitoring and scientific exploration. According to Mingjia Shangguan, the research leader, the system could be especially useful in monitoring submarine pipeline leaks and exploring ocean resources.

The technology works by emitting a green laser pulse in the water. This interacts with substances such as oil, generating Raman signals. The intensity of these signals at specific wavelengths provides information about the composition and distribution of the detected substances.

A Different Look at Lidar

Traditional lidar systems, used on ships, aircraft, and satellites, conduct large-scale ocean profiling. However, their detection depth is limited, especially in rough waters. The submerged Raman lidar, on the other hand, overcomes these limitations, operating effectively at varying depths and maritime conditions.

Moreover, the system developed by the Chinese incorporates single-photon detection, significantly increasing its sensitivity. This allows for high-resolution underwater imagery, essential for scientific and industrial applications.

Applications That Transform Diverse Sectors

The technology has enormous potential across various fields. In ocean research, it can help detect sediments, coral reefs, and other characteristics of the seabed. In underwater archaeology, it makes it possible to locate historical objects with greater accuracy.

In the industrial sector, the system facilitates the inspection of submerged structures, such as oil platforms and pipelines. In military contexts, it can be used for reconnaissance and identification of submarines. The device’s flexibility allows it to adapt to different scenarios, from scientific studies to security missions.

The Future of Submerged Lidar

The team at Xiamen University is already planning to enhance the system. The next step is to develop a lidar that uses blue laser, reducing the influence of chlorophyll fluorescence present in marine plants. This innovation promises to further improve precision in environments with high aquatic vegetation density.

Another goal is to integrate the system into AUVs, expanding its autonomous operational capabilities over large submerged areas. This paves the way for large-scale applications, such as mapping marine ecosystems and exploring mineral resources in deep waters.

A Revolution in Underwater Detection

The Chinese achievement represents a milestone for underwater lidar technology. The advancement not only expands the possibilities for scientific exploration but also contributes to environmental protection and the development of sustainable technologies. With the laser radar developed by Shangguan’s team, the depths of the ocean are more accessible than ever, bringing to light a world of discoveries and opportunities.

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Fernandoaugustoval@gmail.com

#98141

16/12/2024 16:41

Cadê o 5G chinês que é pior que o 4G a china saiu do neolítico em 30 anos e já é o que de melhor existe na ciência pura propaganda enganosa

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gilberto tannure

#97122

15/12/2024 17:11

QUANTO ESSES CHINESES D3 **** ESTÃO PAGANDO PRA VOCES?????
SÓ PUBLICAM COISAS FAVORAVEIS A ELES. PARECE QUE A **** COMUNISTA É UMA SANTA.

-1

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Mario

#97374

Reply to gilberto tannure

15/12/2024 21:35

Chineses não são santos e sim inteligentes, pacientes e planejam no longo prazo… o desespero de l@cai0s dos americanos resulta nesses comentári0s h!stéric0s… Os chineses investem principalmente em ciência e tecnologia, enquanto os EUA só investem na sua gigantesca indústria armamentista e gastam muita grana se intrometendo nos assuntos de inúmeros países, afinal possuem perto de 800 bases militares espalhadas pelo mundo (não é chute e sim informação verídica e verificável)… Se julgam a p0lic!a do mundo… Ah… e os chineses só tem uma única instalação militar fora de seu país, na África…

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Chinese Laser Radar Can Detect a Needle 1 Kilometer Deep Underwater

The Award-Winning Laser Radar Developed in China Can Detect Tiny Objects, Such as a Needle, at an Impressive Depth of 3,280 Feet Below Water.

The Innovation of Single-Photon Raman Lidar

The Precision That Revolutionizes Underwater Research

A Different Look at Lidar

Applications That Transform Diverse Sectors

The Future of Submerged Lidar

A Revolution in Underwater Detection

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Chinese Laser Radar Can Detect a Needle 1 Kilometer Deep Underwater

The Award-Winning Laser Radar Developed in China Can Detect Tiny Objects, Such as a Needle, at an Impressive Depth of 3,280 Feet Below Water.

The Innovation of Single-Photon Raman Lidar

The Precision That Revolutionizes Underwater Research

A Different Look at Lidar

Applications That Transform Diverse Sectors

The Future of Submerged Lidar

A Revolution in Underwater Detection

The Soviet Union spent 22 years drilling into the Earth’s crust and reached a depth of 12,262 meters — they found water where it was thought impossible, hydrogen bubbling from the rock, granite that is 2.7 billion years old, and temperatures of 180 degrees that melted the drill bits.

Ethiopia has banned gasoline and diesel cars, placed over a hundred silent electric buses on the streets of Addis Ababa, and now aims for half a million electric vehicles by 2030, all powered by Africa’s largest dam and a courage that few countries have shown.

Egypt wants to draw 10 million cubic meters of water from the Nile per day into the desert, irrigate a new agricultural frontier, and build a city where there is currently only sand.

BRICS is preparing a payment system inspired by the Brazilian PIX that will allow direct transactions between countries using national digital currencies without relying on the dollar or Western banks as intermediaries.

Norway is drilling 27 kilometers of rock 392 meters below the bottom of a fjord to build the world’s largest and deepest underwater road tunnel — when completed, a 21-hour journey will be reduced to 10.

Chinese engineers begin filling a 217-meter dam at an altitude of 3,000 meters and prepare a 2,240 MW hydroelectric power plant to integrate hydropower, solar, and wind energy in the upper Jinsha.

An astronaut spent 340 days in space while his twin brother stayed on Earth, and NASA found a “rejuvenating” effect, genes, microbiome, cognition, and immune system that revealed the biological cost of living outside the planet.

NASA transforms a retired Boeing 777 aircraft into its largest flying laboratory, capable of carrying 34 tons of equipment to 13,100 meters and flying for 18 hours to investigate storms, polar ice, and extreme weather events across the planet.

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A mother taught her twin children to read and write at age 2 inside an oncology hospital, and 16 years later, the two were accepted into two of the most difficult universities in the world in the United States.

NASA transforms a retired Boeing 777 aircraft into its largest flying laboratory, capable of carrying 34 tons of equipment to 13,100 meters and flying for 18 hours to investigate storms, polar ice, and extreme weather events across the planet.

It’s not a 3D printer: an inventor from Pará created a construction robot that ejects reinforced concrete into molds and builds an entire house at once, reduces labor by 50%, saves 20% on cost, and is already negotiating over 1,000 units across Brazil.

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