At this year's Zhuhai Airshow, China Aerospace Science and Technology Corporation exhibited three early warning radar products: LD-JP, LD-2/JCL100, and LD-2/JSG100. The first two radars are making their debut at the airshow and were both developed by the 23rd Institute of the Second Academy.

　　The LD-JP radar is a long-range three-coordinate radar using a solid-state active phased array system. It is mainly used to detect tactical ballistic missiles and various aerodynamic targets in complex battlefield environments, providing air situation information for weapon systems or national air defense.

　　The LD-2/JCL100 radar is a low-altitude target surveillance radar primarily used for detecting low-altitude and ultra-low-altitude penetrating aerodynamic targets. With the continuous development and mass production of cruise missiles, they are increasingly becoming the main means of modern air strikes. Currently, most countries' air defense radars struggle to effectively counter low-altitude penetrating cruise missiles or aircraft. This radar can serve as a low-altitude gap-filling radar for air defense weapon systems or independently undertake low-altitude surveillance tasks such as national land surveillance, coastal surveillance, and key area defense.

　　The LD-2/JSG100 radar is a medium-range three-coordinate radar using a digital array system. It is mainly used to detect various aerodynamic targets in the airspace, providing accurate target designation information for weapon systems. It can also independently undertake key area air defense tasks.

　　Millimeter-wave cloud detection radar

　　In addition, three meteorological products exhibited by China Aerospace Science and Technology Corporation at this year's Zhuhai Airshow are also making their debut, developed by the 23rd Institute of the Second Academy. The institute's series of meteorological radar products have achieved many domestic firsts, with detection ranges covering from ground level to high altitudes. Users include the China Meteorological Administration, civil aviation airports, research institutions, and more. The radars exhibited are several representatives of the "meteorological family".

　　The X-band weather radar primarily uses the scattering effect of clouds and precipitation on electromagnetic waves to detect clouds and rain within its range, obtaining cloud meteorological parameters for weather observation. This radar allows for continuous long-term observation without human attendance, and remote control operation. It is used to continuously acquire meteorological information within the system's detection range with high temporal and spatial resolution. It can be widely used in aviation meteorological support, short-term nowcasting, disaster weather monitoring, artificial weather modification, agriculture, and scientific research. This radar is currently applied in multiple fields and has been exported overseas.

　　When the wind stops, the clouds know it; whether clouds remain still is known by the cloud detection radar. The 23rd Institute's millimeter-wave cloud detection radar utilizes the scattering effect of non-precipitating clouds, precipitating clouds, and weak precipitation on electromagnetic waves to detect meteorological targets within its range, acquiring relevant meteorological parameters and inverting secondary products such as cloud height, thickness, amount, and shape. This provides data services for atmospheric science research, weather forecasting, artificial weather modification, military meteorological support, and airport meteorological support.

　　As the "foundation" of this exhibition, the automatic meteorological station is basic ground meteorological observation equipment. It can observe in real-time numerous meteorological elements such as ground temperature, humidity, wind speed, wind direction, atmospheric pressure, and precipitation. It is a favorite in many fields including public meteorological services, civil aviation meteorology, hydrological meteorology, transportation meteorology, environmental meteorology, and agricultural meteorology.

　　Active target surveillance radar

　　China's coastal and border defense areas have complex geographical environments and vast areas, making border and coastal protection and law enforcement work difficult. At this year's Zhuhai Airshow, China Aerospace Science and Technology Corporation exhibited several coastal and border defense surveillance system products. These products help with target surveillance and management, improving user efficiency, and attracting considerable attention.

　　Microwave over-the-horizon radar mainly uses atmospheric waveguide conditions to achieve large-scale search and detection of sea surface targets, effectively solving the problem of the line-of-sight limitation on sea area surveillance detection distances. It can detect various large, medium, and small ships at sea and provide services for maritime monitoring, law enforcement, etc.

　　Its "brother," the ground wave over-the-horizon radar, can achieve over-the-horizon, continuous surveillance of sea surface ships and other targets, providing early warning intelligence. This radar can form a network with multiple units, enabling data fusion and collaborative operations. The system boasts high reliability and operates 24/7. It can be used for coastal surveillance, fisheries management, maritime traffic control, anti-smuggling operations, etc., protecting the country's exclusive economic zone within 200 nautical miles.

　　Compared to the above two, the fully coherent solid-state navigation radar and the active target surveillance radar are much smaller. The fully coherent solid-state navigation radar can detect and track sea buoys, ships, and coastal targets, ensuring navigational safety. The active target surveillance radar can detect and locate moving targets such as personnel and vehicles within a specified area. It is used for surveillance of important areas such as ports, borders, oil fields, power plants, and airports. It can also search for ground personnel after a tsunami or earthquake. Radar data can be fused and networked to meet the needs of larger area surveillance.

　　Making its second appearance after its debut at the last airshow, the upgraded "General Coastal Surveillance and Security System"—"Ocean Guardian 2.0"—was officially launched for global maritime surveillance users. This system aims to assist users in establishing a comprehensive maritime situational awareness advantage, improving their monitoring, warning, and analysis capabilities of maritime threats, emergencies, illegal activities, or environmental disasters. Ultimately, it helps users gain a decision-making advantage to support maritime patrol, rescue and recovery, law enforcement, and joint operations, ultimately providing customized services and solutions for different users.