A photonics-based radar-lidar integrated system is proposed, which consists of a photonics-based radar and a frequency-modulated continuous-wave (FMCW) lidar. Since the photonic generation of RF signals is used, the transmitter can simultaneously generate linear frequency-modulated (LFM) radio-frequency (RF) and optical signals. Meanwhile, similar data acquisition methods are shared by the radar and lidar subsystems because FMCW ranging method is used in both of them. In the integrated system, the lidar subsystem provides high-resolution 3D images and velocity distributions, while the radar subsystem can implement real-time imaging with high frame rates. An experiment is carried out, in which a system consisting of a K-band radar and a 1550-nm FMCW lidar is used. The bandwidth of the radar and lidar subsystems are 8-GHz and 4-GHz. The standard deviations of displacements between the measured and the expected distances are 0.342 cm and 0.997 cm for the radar and lidar subsystems, respectively. For multi-sensor fusion applications, the 3D image and velocity distribution of a static cardboard and a spinning disk are obtained by the lidar subsystem, while the inverse synthetic aperture (ISAR) imaging for the spinning disk is achieved by the radar subsystem. Since some parts of the system are shared by the lidar and radar subsystems, the integrated system has a compact configuration, which is a potential configuration of the on-chip radar-lidar fusion system. Moreover, the performance of the lidar and radar subsystems are higher than the commonly used radar-lidar fusion system, which can be further enhanced by sophisticated data fusion algorithms.

中文翻译：

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用于多传感器融合应用的基于光子学的雷达-激光雷达集成系统

提出了一种基于光子学的雷达-激光雷达集成系统，它由一个基于光子学的雷达和一个调频连续波（FMCW）激光雷达组成。由于使用了射频信号的光子生成，发射器可以同时生成线性调频 (LFM) 射频 (RF) 和光信号。同时，由于雷达和激光雷达子系统均采用 FMCW 测距方法，因此它们共享相似的数据采集方法。在集成系统中，激光雷达子系统提供高分辨率的3D图像和速度分布，而雷达子系统可以实现高帧率的实时成像。进行了一项实验，其中使用了由 K 波段雷达和 1550 纳米 FMCW 激光雷达组成的系统。雷达和激光雷达子系统的带宽为 8 GHz 和 4 GHz。对于雷达和激光雷达子系统，测量距离和预期距离之间位移的标准偏差分别为 0.342 厘米和 0.997 厘米。对于多传感器融合应用，静态纸板和旋转圆盘的 3D 图像和速度分布由激光雷达子系统获得，而旋转圆盘的逆合成孔径 (ISAR) 成像由雷达子系统实现。由于系统的某些部分由激光雷达和雷达子系统共享，集成系统具有紧凑的配置，这是片上雷达-激光雷达融合系统的潜在配置。此外，激光雷达和雷达子系统的性能高于常用的雷达-激光雷达融合系统，可以通过复杂的数据融合算法进一步增强。