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- LFM-Costas stepped frequency radar (SFR) signal is an important radar signal. 线性调频 Costas频率步进雷达信号是一种很有研究价值的雷达信号。
- In order to obtain high range resolution, the Chirp signal is used as subpulse to form stepped frequency modulated radar signal. 摘要为了获得高距离分辨率，将线性调频信号作为子脉冲构成调频步进雷达信号。
- In part two, a broad band RCS measurement system, called stepped frequency CW system, is demonstrated. 第二部分着重介绍了一种宽带RCS测试系统，即频率步进RCS测试系统。
- The millimeter wave (MMW) Inter-pulse stepped frequency radar is a type of wide-band high-range-resolution radar. 毫米波脉冲频率步进雷达是一种宽带高距离分辨率雷达。
- The frequency synthesizer is the core device of MMW inter-pulse stepped frequency radar, and its performance has great effects on radar system. 频率合成器是毫米波脉冲频率步进雷达的核心部件,其性能指标的优劣对整个雷达系统有较大的影响。
- Liu Zheng, Zhang Shouhong.Estimation of target motion parameter in a stepped frequency pulses radar [J].Acta Electronica Sinica, 2000, 28 (5): 43-45. [5]刘峥;张守宏.;步进频率雷达目标的运动参数估计[J]
- Owing to the phenomenon of "target splitting" of multi-scatter motion target range profile of the stepped frequency signal, it brings difficulties in target identification. 频率步进信号对运动的多散射体目标成像时会出现“目标分裂”现象,给目标识别带来困难。
- Finally, the performance experiments of MMW interpulse stepped frequency radarare verified by mass of measurements, which settle the base of the practicability of system. (5)对毫米波脉间频率步进雷达整体系统进行了外场性能实验，为系统的实用化奠定了基础。
- Abstract: In this paper, we study the application of wavelet transforming for target of step frequency MMW radar. 文摘:研究子波变换在频率步进毫米波雷达目标识别中的应用。
- In this paper, we study the application of wavelet transforming for target of step frequency MMW radar. 研究子波变换在频率步进毫米波雷达目标识别中的应用。
- Operating in the heavy congested SW band, HF radars use a quasi-random step frequency signal to avoid the interference bands. 高频雷达工作在电磁环境十分恶劣的短波段,为避开干扰严重的频段,采用一种准随机跳频信号。
- This paper studied the extraction of the pitch and yaw angular errors of the line-of-sight to seeker-axis under the function of MMW step frequency target identification. 本文研究毫米波频率步进目标辨识功能下获取弹目线相对于导引头轴的俯仰及偏航角误差的实现方法。
- This paper studies how to detect the moving targets on the land and sea surface in the background of clutters by using pulse-pulse step frequency radar. 研究了用脉间步进频率雷达对杂波背景噪声下地面或海面动目标的探测。
- The first aspect includes movement phases divisions, time features of each movement phase, distance analysis of each movement phase in motion, and the discussion on the connection among step length, step frequency and pace, etc. 其中对动作时相分析中包括动作时相的划分、各动作时相的时间特征、各动作时相滑行的距离分析以及对步长、步频和步速相关关系的讨论;
- He stepped up so as to be able to speak. 为看得更清楚，他上到高处。
- My boss was too old to work well. He stepped down. 我的老板年龄太大，做不好工作了，他上星期离了职。
- The man stepped in and asked for my father. 那个人走进来求见我父亲。
- She stepped aside to let them pass. 她站到一边让他们走过去。
- The ice cracked as I stepped onto it. 我一踩冰就裂了。
