ID 原文 译文
54597 地球同步轨道合成孔径雷达(GEO SAR)在对动目标检测和成像方面更具优势，但随之而来的一些问题也需要进一步解决。 Geosynchronous synthetic Aperture Radar(GEO SAR) has more advantages in moving target detection and imaging, but some problems need to be further solved.
54598 本文提出了一种基于GEO SAR双通道双载频实现运动目标检测、成像和参数估计的方法。 In this paper, a method of moving target detection, imaging and parameter estimation based on GEO SAR dual-channel and dual-carrier frequency is proposed.
54599 利用广义Keystone变换对杂波对消处理后的运动目标进行距离走动校正， The generalized Keystone transform is used to correct the range migration of the moving target after clutter cancellation.
54600 使用离散调频傅里叶变换(DCFT)结合牛顿迭代法搜索完成多普勒参数估计后，利用在不同工作频率下的求得的速度集合进行交集来解决快速运动目标速度模糊的问题， After the Doppler parameters are estimated by discrete chirp-Fourier transform(DCFT) combined with Newton iterative method, the problem of velocity ambiguity of fast moving target is solved by the intersection of velocity sets obtained at different working frequencies,
54601 并给出了一种简单高效的速度搜索算法。 and a simple and efficient speed search algorithm is presented.
54602 通过将传统的双通道一发多收体制扩展到双发双收体制，不仅可以有效抑制杂波，还可以避免运动目标多普勒重叠。 By extending the traditional dual-channel one-transmit multiple-receiver system to double-transmit and double-receive system, not only clutter can be effectively suppressed, but also Doppler overlap of moving targets can be avoided.
54603 最后，仿真实验证明该方法的有效性。 Finally, simulation results show that the method is effective.
54604 针对低莱斯因子的慢衰落时变多径信道条件下，难以有效利用信号能量，导致系统误码性能差， For the slow fading time-varying multi-path channel with low Rician factor, the signal energy cannot be effectively used, and the system error performance is poor.
54605 单纯的基于最小均方误差准则均衡(Minimum Mean Squared Error，MMSE)技术不能够有效降低误码率的实际问题。 The purely equalization based on the minimum mean squared error(MMSE) technology cannot effectively reduce the error.
54606 在构建信道等效模型的基础上，提出了一种利用硬判决符号重构信道，在两个信道长度内比较改判信号误差信息的时频联合判决两轮次MMSE均衡算法。 On the basis of constructing the channel equivalent model, a two-round MMSE equalization algorithm is proposed that uses hard decision symbols to reconstruct the channel and compares the time-frequency joint judgement of the error information of the modified signal within two channel length.