Synthetic Aperture Radar (SAR) actively emits electromagnetic waves and receives the reflected echoes. This unique imaging mechanism endows SAR with all-time, all-weather penetrating imaging capability, making it one of the indispensable technologies in the remote sensing field for more than half a century since SAR first emerged.
Early SAR systems often weighed hundreds of kilograms and could only be carried on large manned aircraft or satellite platforms. In recent years, however, as SAR remote sensing technology has gradually spread, a lightweight revolution has been quietly taking place worldwide. Lightweight and compact design is becoming the "inevitable trend" for international airborne SAR.
Traditional airborne SAR systems
In 2025, the global synthetic aperture radar market reached USD 5.13 billion and is projected to grow to USD 7.96 billion by 2032. (Industry data in this article is sourced from the internet and is for reference only.) The core driver behind this growth is precisely the miniaturization and lightweight design of SAR systems. Internationally, the major players have already made their moves. Boeing, Insitu, and the Netherlands-based TNO jointly advanced the MRaISR program in 2025, aiming to design a low-SWaP (Size, Weight, and Power) multi-mode SAR radar that gives small and medium-sized UAVs the all-weather reconnaissance and intelligence-gathering capabilities previously reserved only for large platforms. At the DSEI 2025 defense exhibition in London, U.S. company IMSAR showcased its low-SWaP SAR radar, sparking strong industry interest in "advanced radar solutions for maritime, ground, and aerial missions." Poland's SpaceForest launched the HUSSAR radar in 2024, weighing from just 5 kg, designed specifically for rotorcraft UAVs with a 5–10 kg payload. Turkey's ASELSAN developed the FULMAR-200 SAR pod system in 2024, also emphasizing lightweight and compact design.
Why is the whole world moving toward "lighter"? Because the shackles of "expensive, bulky, and platform-restricted" traditional SAR systems are forcing the entire industry to innovate. The combination of Frequency Modulated Continuous Wave (FMCW) technology with SAR has made it possible to build lightweight, high-resolution imaging sensors. Compared with traditional SAR systems, it offers notable advantages: lower cost, smaller size, lower power consumption, and lighter weight.
Our Lingyun series of miniature SAR payloads integrates a high-precision inertial navigation system, a high-performance servo-stabilized gimbal, an RF antenna, and supporting data-link and power-supply modules. The entire unit weighs only 2.7 kg or even less, with power consumption as low as 120 W. Behind this achievement lies our sustained, focused R&D effort across multiple technical fronts, including RF integration, antenna miniaturization, and low-power design.
Lingyun series product image
More importantly, lightweight design has never come at the expense of performance. The system has been successfully integrated into industry-grade low-payload UAV platforms such as the DJI M400 and JOUAV CW-15, and has completed multiple real-world aerial-survey validations. Whether in radiometric calibration accuracy, polarization isolation, or post-processing imaging accuracy, our technical specifications reach industry-leading levels, offering the following advantages:
1、More flexible platform selection: At around 2 kg, the payload can be mounted on multirotor UAVs such as the DJI M400, and can also be adapted to fixed-wing UAVs such as the CW-15 — from multirotor to fixed-wing, from electric to gasoline-powered, it is nearly universal.
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3、Faster response: When a disaster strikes, you have to wait for satellite revisit cycles and for the scheduling of large aircraft. With lightweight UAV-borne SAR, you can take off the same day and deliver imagery the same day.
4、Multiplied mission frequency: The low cost brought by lightweight design makes high-frequency, long-cycle routine monitoring possible — and this is precisely the core requirement for applications such as deformation monitoring, agricultural yield estimation, and urban planning.
Mounted on the DJI M400
Mounted on the JOUAV CW-15
In the field of airborne SAR, we are opening a new track through technological innovation, focusing on lightweight, low-cost solutions that meet the needs of consumer-grade UAVs and radar data services. Making SAR lightweight is not only about keeping up with industry trends, but more importantly, about letting more people use SAR and taking SAR to more places that need it. We are committed to bringing domestic SAR from niche to mainstream, making synthetic aperture radar truly an accessible, efficient, and reliable Earth-observation tool!
