1) long-time signal accumulation
长时间信号积累
2) long integration time
长积累时间
1.
To determine whether a maneuvering target exists in a long integration time in Sky-Wave or Surface-wave over-the-horizon radar(OTHR),a new detection method based on time-frequency distribution(TFD) and morphological filtering is proposed to detect the maneuvering targets in OTHR systems.
为了检测天波地波超视距雷达(OTHR)长积累时间中是否存在机动目标,提出了一种基于时频分布(TFD)和形态学滤波检测OTHR系统中的机动目标的新方法。
3) long-term integration
长时间积累
1.
According to the problem of target range migration through resolution cells in a long-term integration,a long-term coherent integration method is proposed to maintain the detection sensitivity of the radar.
针对超宽频带制导雷达长时间积累过程中运动目标跨距离分辨单元走动,引起微弱目标检测性能下降的问题,提出一种基于Stretch处理的相参积累方法。
4) long-time coherent integration
长时间相干积累
1.
Secondly,a space-time-frequency domain solution to this problem was described:adaptive nulling array processing is considered in space domain,channel equalization and adaptive interference cancellation are used in time domain,furthermore,long-time coherent integration is provided in frequency domain.
对该体制雷达的特点:存在直达波干扰问题进行了分析;提出了空-时-频域的综合解决方案:即在空域内使用天线自适应干扰置零,在时域内通过通道均衡和自适应干扰对消以及在频域内进行长时间相干积累等技术;最后给出了基于FM广播照射源的一个实验系统,利用该实验系统采集的数据进行仿真,仿真结果验证了该方法的有效性。
5) long-term coherent integration
长时间相参积累
1.
According to the signal processing principle of interrupted continuous-wave radar homing head and the interference principle of towed decoy,a long-term coherent integration method is proposed for resolving the target and towed decoy in the Doppler frequency domain.
针对准连续波雷达导引头信号处理及拖曳式雷达诱饵的干扰特性,提出了一种长时间相参积累的方法来完成目标及诱饵的多普勒频率域分辨。
2.
According to the coherent phase-coded pulse train(CPCPT) signals used in terminal radar seeker,a long-term coherent integration method is proposed.
针对精确末制导雷达导引头相位编码相参脉冲串信号(CPCPT),提出一种长时间相参积累方法。
6) Long-duration energy integration
长时间能量积累
补充资料：离散时间信号的Z变换
见变换&dbname=ecph&einfoclass=item">Z变换。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条