I. Definition
Within the Synthetic Aperture Radar (SAR) family, the W-band (75GHz-110GHz), with its unique high-frequency advantages, has become a "detail hunter" in the field of precise perception. Compared to traditional band SAR, the W-band achieves ultra-high imaging accuracy at the 0.1-meter level thanks to its extremely short wavelength, while also possessing lightweight characteristics, making it particularly suitable for airborne platform applications. This has opened up broad application prospects in both military and civilian fields, becoming an important support for technological empowerment of security and development.
II. Application Areas
(1) Civil Applications
A. Power Grid Inspection: Drones equipped with this band of SAR can flexibly navigate power transmission corridors between urban buildings and mountain valleys. With a resolution of 0.05 meters, they can detect millimeter-level cracks in insulators and tiny foreign objects on conductors, achieving a daily inspection efficiency of hundreds of kilometers, far exceeding the 10 kilometers/day of manual inspection.
B. Disaster Emergency Response: Its penetration advantage is even more prominent. At disaster sites such as landslides and floods, it can penetrate smoke, dust, rain, and fog to accurately transmit key information such as the affected area and water depth.
C. Resource Management: Combined with deep learning algorithms, it can accurately distinguish tree species, monitor forest pests and diseases, and sensitively detect soil moisture.
(2) Military Applications
A. Camouflage Assessment: This band of SAR can penetrate camouflage nets, clearly revealing details such as the track outlines and metal parts of armored vehicles. Even if the target's engine is off, it can capture minute vibrations of 0.1 Hz, quickly completing target identification and location.
B. Battlefield Reconnaissance: W-band SAR can be integrated into small combat platforms such as micro-UAVs and armored vehicles, enabling "observation through walls" in urban warfare. It transmits real-time images of indoor personnel activities and obstacle distribution, providing special operations forces with precise situational awareness.
C. Electronic Countermeasures: Leveraging its ultra-high resolution imaging and real-time processing capabilities, W-band SAR can operate stably in environments with strong electromagnetic interference. It automatically identifies the locations of enemy radar sites, communication nodes, and other radiation sources, and simultaneously generates 3D terrain-matching maps, supporting a closed loop of precision guidance and fire strikes.
III. Platform Adaptability
The W-band airborne synthetic aperture radar system, with its lightweight design (weighing only 2-3 kg), can be flexibly mounted on various UAVs to achieve high-resolution video imaging and real-time monitoring.
IV. Airborne Miniature SAR System
Suzhou Tianjing Yunhu Intelligent Technology Co., Ltd. (hereinafter referred to as Tianjing Yunhu) is committed to becoming a leading global synthetic aperture radar solution provider, offering users customized radar equipment, SAR data acquisition services, and radar data products. Leveraging years of R&D experience and professional technical accumulation, Tianjing Yunhu has launched SAR products with multiple bands and various capabilities, including frequency-modulated continuous wave and pulse systems. Currently, Tianjing Yunhu has coverage of multiple bands such as X, Ku, K, Ka, C, W, and L, and its product systems support single-polarization, full-polarization, strip, spotlight, interferometry, and single-pulse search modes. The products feature real-time imaging, GMTI, and deformation monitoring functions. Tianjing Yunhu SAR products can be mounted on multi-rotor/fixed-wing UAVs, manned aircraft, satellites, and vehicle-mounted platforms.
