ID	原文	译文
2763	并且实验结果显示该方法相比于常规方法可以大幅度减少运算所需的时钟周期数、降低对运算中对内存的存取量、以及占用更少的内存。	Experimental results validate the benefits of the proposed method with lessclock cycle, less memory reference, and fewer memory space compared with the conventional implementation.
2764	天发舰收高频雷达是对传统固定平台条件下天地波雷达系统的延伸，由于舰载平台运动和传播信道中电离层的影响，使得一阶海杂波谱呈现出更多特点。	The shipborne high frequency sky-surface wave radar is a further extension of the sky-surface wave ra-dar system under the traditional fixed platform. However, due to the influence of the shipborne platform motion and the ionosphere in the propagation channel, the first-order sea clutter spectrum exhibits more features.
2765	本文根据 Walsh 模型中一阶电场方程，推导得到了天发舰收传播模式下一阶海面散射截面积的解析表达式。	Based on the first-or-der electric field equation in the Walsh model, the analytic expression of the first-order ocean surface cross-section forthe sky-ship propagation mode is derived.
2766	然后，根据表达式对不同因素对一阶谱的影响进行仿真分析。	Then, according to the expression, the effects of different factors on the first-order spectrum are simulated and analyzed.
2767	仿真结果表明雷达工作频率、舰载平台运动和电离层水平漂移运动是引起一阶海杂波谱多普勒展宽的主要原因，	Simulation results demonstrate that the radar operating frequency, the mo-tion of the platform and the horizontal motion of the ionosphere are the main reasons of the first-order sea clutterDoppler spectrum broadening.
2768	风向主要影响一阶海杂波谱的形态变化，而这一特点为根据一阶海杂波谱进行海洋遥感提供了可能。	The wind direction mainly affects the morphological changes of the first-order sea clutterspectrum, and this feature provides the possibility of ocean remote sensing according to the first-order sea clutter spec-trum.
2769	相较于传统空时自适应处理(STAP)技术，稀疏恢复(SR)STAP 技术在小样本条件下杂波抑制性能显著提升，因此适用于现实非均匀杂波环境。	Compared with conventional space-time adaptive processing (STAP)technique, sparse recovery (SR)STAP technique can significantly improve the clutter suppression performance in the case of limited training samples, andhence is well suited for practical non-homogeneous clutter environment.
2770	本文首先阐述了 SR STAP 基本原理，分析了机载雷达杂波空时稀疏特性;	Firstly, the paper describes the principle of SRSTAP, and analyzes the clutter sparsity in space-time plane for airborne radar.
2771	然后总结了 SR STAP 发展历史与现状，并在此基础上针对其相关科学问题进行了探讨，包括:空时谱估计还是杂波抑制、单观测样本还是多观测样本、白化还是置零、重构算法参数依赖还是不依赖、非平稳杂波下是否适用及干扰条件下是否可行;	Then the development and current status of SRSTAP is summarized. On this basis, some key issues about the technique are discussed which include space-time spectrum estimation or clutter suppression, single or multiple measurements, clutter whitening or nulling, parameter dependence or in-dependence for recovery algorithms, whether applicable for non-stationary clutter environment, and whether feasible under the condition of jamming.
2772	最后给出了当前 SR STAP 技术走向实用化过程中所面临的关键问题，即网格失配和空域误差影响，并分别讨论了无网格压缩感知和字典自校正的解决途径。	Finally, key problems confronted in the real-world applications for sparse recovery STAP tech-nique are presented, which include off-grid effect, influence of spatial errors, and huge computational cost. Meanwhile, effec-tive ways including gridless compressive sensing and self-calibration of overcomplete dictionary are respectively discussed to solve above problems.