ID 原文 译文
21295 连续相位频移键控(CPFSK)作为遥测体制标准被广泛采纳。 Continuous Phase Frequency Shift Keying (CPFSK) is widely adopted as a standard by thetelemetry community.
21296 多符号检测(MSD)技术能够降低CPFSK信号的解调门限，这要求CPFSK定时同步方法能够在更低的信噪比条件下正常工作。 The Multi-Symbol Detection (MSD) technique can increase channel gain for the CPFSKtelemetry system. Therefore, the timing synchronization method for CPFSK signal needs to adapt to thescenario with lower SNR.
21297 针对现有的CPFSK定时同步方法在低信噪比下同步困难的问题，该文提出一种基于MSD的CPFSK定时同步方法，且适应可变符号速率CPFSK信号接收。 According to existing timing synchronization methods’ poor performance in low SNR, a novel timing synchronization method for CPFSK signal based on MSD is proposed, which is suitable to variable rate.
21298 数值仿真结果表明，在Eb/N0为0 dB，符号速率为2 Mbps的情况下，该方法的误比特率性能比传统单符号间隔似然检测同步方法提高2 dB；与MSD迟早门时延同步方法性能相近，但消耗的硬件资源不及后者的40%。 The simulation results show that, when Eb/N0 is 0 dB and symbol rate is 2 Mbps, the proposed method achieves 2 dB more channel gain than the single symbol likelihood decision method, and has similar performance to the early-late gate code synchronization method with reduced hardware resource by 60%.
21299 原理样机实测结果验证了数值仿真和资源评估的正确性。 Finally, the validity of the numerical simulation and resource evaluation is verified by principle prototype realization.
21300 利用单个旋转天线实现波束扫描高精度测角具有十分重要的意义。 Estimation of Direction Of Arrival (DOA) with scanned beams of single rotational antenna is meaningful.
21301 为了以低计算复杂度实现高精度角度估计，该文提出一种基于模式分量分离的闭式估计方法。 To obtain precise estimation with low computation burden, a closed-form estimator is proposedbased on estimating the mode component.
21302 首先将天线方向图表示为指数和形式，将角度估计问题转化为包含角度信息的模式分量估计问题，从而实现单模角度估计。 Firstly, the problem can be transformed into the estimation of mode component when antenna pattern is expressed with a formula of exponential sums, thus DOA can be induced from each mode.
21303 结合模式分量的理论估计误差，推导得到多模联合估计式和理论估计精度。 Considering the estimation error, a multi-mode estimator with its theoretical error is derived.
21304 针对非理想观测条件下，模式分量求解出现的数值不稳定问题，提出对方向图进行匹配重构的方法， Non-ideal observing conditions result in an ill-determined problem for the estimation of mode component. A modified method is proposed by reconstructing the antenna pattern.