ID	原文	译文
54337	加速度的存在增加了双基合成孔径雷达距离和方位向的耦合，使成像处理更加困难。	The existence of acceleration increases the coupling of range and azimuth of bistatic SAR, which makes the imaging processing more difficult.
54338	论文提出了一种二维频谱的正交解耦合方法，以解决加速度下的双基SAR成像问题。	In this paper, an orthogonal decoupling method of two-dimensional spectrum is proposed to solve the imaging problem of bistatic SAR under acceleration.
54339	首先利用Chebyshev多项式将斜距展开成幂级数形式，	Firstly, Chebyshev polynomials are used to expand the slant range into higher-order power series, which improves the accuracy of slant range approximation.
54340	然后利用驻留相位原理和级数反演法(Method of Series Reversion，MSR)得到回波信号的二维频谱。	Then, the method of series inversion is used to obtain the high-order approximate two-dimensional spectrum of echo signal.
54341	在此基础上，将二维频谱中的耦合相位进行Chebyshev正交分解，以解除距离和方位的耦合。	On this basis, the coupling phase terms of the two-dimensional spectrum are decomposed by Chebyshev orthogonal polynomials to eliminate the range-azimuth coupling.
54342	最终通过相位补偿实现聚焦成像。	Finally, focus imaging is realized by phase compensation.
54343	实验结果表明，该方法能有效克服加速度的影响，并提高目标的成像质量。	Experimental results show that this method can effectively overcome the influence of acceleration and improve the imaging quality of point targets.
54344	理论推导和仿真结果验证了算法的有效性和可行性。	Theoretical derivation and simulation results verify the effectiveness and feasibility of the algorithm.
54345	本文在背景噪声存在不确定性的无线通信中，研究对于监控方检测最有利条件下的单向隐蔽通信问题。	In the environment with noise uncertainty, the one-way covert communication was investigated under the best-case scenarios for the detection of a warden.
54346	首先，根据接收方检测能力存在极限的事实，利用信道预编码保证在接收方处汇聚的信号功率超过其检测阈值，同时保证在监控方处弥散的信号功率低于检测阈值，进而实现基于信道差异的隐蔽通信。	First, given that receivers have detection limits, the channel-based precoding was applied to ensure that the power of signals converged at the receiver exceeds its detection limit, whereas the power of signals diffused at the warden is below its detection limit, achieving covert transmission based on the difference of wireless channels.