ID	原文	译文
22205	高分辨波达方向(DOA)估计是地基/空基预警雷达实现主波束内多目标精细跟踪需要解决的关键问题。	High-resolution Direction Of Arrival (DOA) estimation is a critical issue for mainbeam multi-target tracking in ground-based or airborne early warning radar system.
22206	针对上述问题，该文提出一种波束-多普勒酉 ESPRIT 多目标 DOA 估计算法。	A Beam-Doppler Unitary ESPRIT (BD- UESPRIT) algorithm is proposed to deal with this problem.
22207	该方法首先通过时域平滑技术构造多个快拍。	Firstly, multiple snapshots without spatial aperture loss are obtained using the technique of time-smoothing.
22208	然后采用中心共轭对称傅里叶变换矩阵将数据变换至波束-多普勒域，同时保留旋转不变结构。	Then the conjugate centrosymmetric Discrete Fourier Transform (DFT) matrix is used to transform the extracted data into beam-Doppler domain.
22209	最后采用实值 ESPRIT 算法估计目标的 DOA。	Finally, the rotational invariance property of the space-time beam is exploited to estimate DOA.
22210	所提方法充分利用了信号的时域信息来改善空域参数估计性能，同时具有较低的计算复杂度。	Since the proposed algorithm takes full advantage of temporal information and is implemented in low-dimensional beamspace, the DOA estimation accuracy can be improved greatly with dramatically reduced computational complexity.
22211	实验结果证明了所提方法的有效性。	Numerical examples are given to verify the effectiveness of the proposed algorithm.
22212	单载波频域均衡(SC-FDE)系统中，信道的频域响应可以作为随机源来生成密钥。	A secret key generation scheme is proposed in a Single Carrier Frequency Domain Equalization system (SC-FDE).
22213	为了提高密钥容量，该文提出一种利用多径瑞利信道的频域响应来生成密钥的机制(CFR-Key)。	The scheme uses the Channel Frequency Response (CFR) to generate the secret keys, which is termed as CFR-Key.
22214	首先研究了 CFR-Key 机制的原理和密钥生成速率，通过互信息理论推导出了 CFR-Key 的密钥容量；	The principle of the CFR-Key scheme is introduced and formulate the secret key capacity is derived based on mutual information theory.