In the fields of remote sensing and high-precision imaging, synthetic aperture radar (SAR) has become an indispensable technical means for modern Earth observation due to its all-weather and all-day operation capabilities. L-band pulse SAR, with its strong penetration, all-weather and high-resolution characteristics, has become the preferred solution for information acquisition in complex environments.
Our company has launched the XY1A-L miniature synthetic aperture radar system, which breaks through the limitations of traditional remote sensing with innovative technology, and provides highly reliable intelligent remote sensing solutions for multiple scenarios such as land surveying, marine monitoring, pipeline inspection, and camouflage assessment.
I. Onboard Real-Time Imaging
Full-flight onboard real-time imaging was achieved. During flight missions, radar echo data was rapidly processed by the onboard processing unit, and the generated high-definition images were transmitted back to the ground station in real time via data transmission links, truly achieving "seeing while flying, acquiring data instantly," which has irreplaceable value in scenarios such as emergency monitoring and dynamic target tracking.
Real-time image at 0.5m onboard
II. Core Performance Advantages
The Xiangyun 1A-L is designed with an L-band pulse system as its core, featuring a center frequency of 1.2GHz and a bandwidth of 400MHz. Its low-frequency, long-wave characteristics endow it with superior penetration capabilities, allowing it to penetrate vegetation and soil to capture subsurface and internal vegetation structural information. The system supports both strip imaging and spotlight imaging modes, and has single-polarization and full-polarization acquisition capabilities. It integrates a high-precision POS system (IMU + differential GNSS) and combines a unique "intra-pulse motion compensation" and MD autofocus algorithm, providing polarization and radiometric calibration functions. This effectively suppresses image blurring, ensuring the output of clear, detailed, high-quality images under various flight conditions.
The system supports standard data and command interfaces, flexibly compatible with various UAV flight control and ground station systems. It also provides open APIs and SDKs, supporting secondary development and deep integration with industry software, facilitating customized functional expansion for different application scenarios (such as land surveying, pipeline inspection, marine monitoring, disaster assessment, etc.).
III. Flight Tests
Our company conducted multiple test flights of the Xiangyun 1A-L product at our test site in Zhouzhuang, continuously updating and debugging it. Ultimately, our Xiangyun 1A-L product achieves an imaging resolution better than 0.5m, while keeping the overall weight under 8KG and power consumption below 150W. It possesses excellent vibration resistance, shock resistance, high and low temperature resistance, and moisture resistance, and can operate stably within a wide temperature range of -20℃ to 50℃, even adapting to high-altitude, low-pressure environments above 5500 meters, ensuring continuous and stable operation under various harsh conditions. It is perfectly compatible with various UAVs, including hexacopter and fixed-wing UAVs.
The system supports standard data and command interfaces, flexibly compatible with various UAV flight control and ground station systems. Simultaneously, it provides open APIs and SDKs, supporting users for secondary development and deep integration with industry software, facilitating customized functional expansion according to different application scenarios (such as land surveying, pipeline inspection, marine monitoring, disaster assessment, etc.).
Post-processing for high-precision imaging at 0.2m
L-band SAR system architecture diagram
L-band SAR flight test image
