The higher accuracy of measuring the Doppler frequencies, the less error of the aperture distribution.
多普勒频率的测频精度愈高,反演口径分布的误差愈小。
The jitter error brought in by the aperture jitter increases as the frequency increase of the input signal in high speed data acquisition systems, thus it degrades the system's SNR.
结果表明,孔径抖动引起的孔径误差随着高速数据采集系统输入信号频率的升高而增大,由此将引起系统信噪比的下降。
A special test gauge for large aperture inner diameter and roundness is designed in this paper, and the gauge error is analyzed by calculating and determining its parameters.
介绍一种大孔径内径和圆度专用检验量具的设计,并通过计算确定该量具的设计参数并对该量具进行误差分析。
The bit error rate of an atmospheric laser communication system is affected by not only vibration amplitude but also the aperture of optical transmitting antenna.
大气激光通信系统的误码率不仅受到振动时振幅大小的影响,而且受到光学发射天线孔径的影响。
Secondly, on the assumption that the phase error on the aperture led by the random surface error obeys the Gaussian distribution with zero mean, the expression of the average power pattern is deduced.
然后在设定由随机表面误差引入的口径相位误差服从均值为零的正态分布的条件下,推导了天线平均功率方向图的计算公式。
Traditional airborne SAR (Synthetic Aperture Radar) makes use of the GPS/INS to compensate the platform motion error to acquire high resolution images.
传统的机载合成孔径雷达(SAR)一般依赖于GPS/INS组合系统补偿平台的运动误差,并获得高分辨率的图像。
In synthetic aperture sonar imaging, the residual phase error is mainly corrected via autofocus.
合成孔径声呐成像中,主要通过自聚焦校正剩余相位误差。
This paper reports the causes of image geometry error for synthetic aperture side-locking radar (SALE) and analyses of correcting principle with wedge-len.
本文介绍了合成孔径旁视雷达图象几何误差的产生原因与分析了楔形透镜的校正原理。
It is demonstrated that ML estimating error can converge to CRB quickly with increasing synthetic aperture length and Signal to Noise Ratio (SNR), but a threshold effect exists.
研究表明,随着合成孔径长度和信噪比的增加,ML估计误差可以很快地收敛于CRB,但存在阈值效应。
Displaced phase center algorithm is an effective motion compensation method when the motion error along the synthetic aperture is small.
位移相位中心法在合成孔径声呐载体运动误差较小时是一种运动补偿的有效方法。
The effect of quantification noise, saturation noise and bit error noise of synthetic aperture radar(SAR)raw data on the signal to noise ratio of distributed targets is analyzed.
定量分析了星载合成孔径雷达(SAR)原始回波信号的量化噪声、饱和噪声以及误码噪声对面目标信噪比的影响;
Furthermore, taking phase error of RF front-end, sampling error of high-speed ADC and the size of array into consideration, the image quality of synthetic aperture DSMR is still poor.
受射频前端相位误差、ADC采样误差及阵元个数有限的影响,综合孔径直接采样微波辐射计成像质量仍然较低。
Furthermore, taking phase error of RF front-end, sampling error of high-speed ADC and the size of array into consideration, the image quality of synthetic aperture DSMR is still poor.
受射频前端相位误差、ADC采样误差及阵元个数有限的影响,综合孔径直接采样微波辐射计成像质量仍然较低。
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