ID	原文	译文
19255	基于雷达关联成像原理，该文研究运动目标双基雷达关联成像问题。	Based on the principle of radar coincidence imaging, theproblem of bistatic radar coincidence imaging of moving targets is studied.
19256	首先，针对采用均匀线性阵列作为收发天线的双基雷达系统，在发射随机频率调制信号条件下，分析运动目标雷达回波信号特点，建立双基雷达关联成像参数化稀疏表征模型；	Firstly, based on the bistatic radar system that uses uniform linear array as the transmitting and receiving antenna, the characteristics of the moving target radar echo signal are analyzed under the condition of transmitting random frequency modulation signal, and a bistatic radar coincidence imaging parametric sparse representation model is established.
19257	其次，针对建立的参数化稀疏表征模型，提出一种基于稀疏贝叶斯学习的迭代关联成像算法。	Secondly, an iterative coincidence imaging algorithm based on sparse Bayesian learning is proposed for the parametric sparse representation model established.
19258	该算法在建立贝叶斯模型基础上，通过贝叶斯推理，得到稀疏重构信号，从而实现对运动目标成像和运动参数的精确估计。	Based on the Bayesian model, the sparse reconstructed signal is obtained by Bayesian inference, so that the moving target imaging and accurate estimation of motion parameters can be achieved.
19259	最后，通过仿真实验验证所提方法的有效性。	Finally, the effectiveness of the proposed method is verified by simulation experiments.
19260	远距离(LoRa)散射通信(BC)不仅成本低、功耗低，而且通信距离远。	Long Range(LoRa) Backscattering Communication (BC) not only has the advantages of low cost andlow power consumption, but also has a long communication distance.
19261	但现存散射方案的系统组成复杂，且无法应用于实际工程。	However, the existing LoRa BC scheme iscomplex and can not be applied to actual engineering.
19262	为此该文提出一种新的LoRa散射通信方法，采用直接数字频率合成(DDS)技术产生频率线性变化的方波作为LoRa散射调制信号，并据此首次展示了基于MCU的LoRa散射通信系统原型样机。	For this purpose, a new LoRa BC method is proposed. ADirect Digital frequency Synthesis (DDS) technique is used to generate a square wave with a linear frequencyvariation as a LoRa scattering modulation signal. For the first time, the prototype of LoRa BC system based onMCU is demonstrated.
19263	实验结果表明，该方法能够在相距208 m的基站和接收端之间的任意位置实现低功耗LoRa散射通信，且兼容现有的商用LoRa射频芯片组。	Experimental results show that design can successfully realize backscatter communication at any position between the station and the receiver which are 208 meters apart, while being compatible with commodity LoRa chipset.
19264	此外，该方法还适用于专用集成电路(ASIC)设计，可使LoRa散射IC有更高的鲁棒性、更低的成本和功耗。	In addition, the method is also applicable to an Application Specific Integrated Circuit (ASIC) design, which enables the LoRa backscattering IC to have higher robustness, lower cost, and lower power consumption.