In this paper, the ultrasound Doppler error detection equipment based on MCS-51 is introduced.
本文介绍了一种基于MCS - 51单片机的多普勒超声诊断仪计量检测装置的研制。
The new algorithm has better performance than the Sunzi algorithm because it can rectify the measurement error and can resolve Doppler ambiguity as well as range ambiguity.
这种算法对测量误差不敏感，而且既可以解距离模糊又可以解多普勒模糊，所以它的性能优于孙子定理算法。
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。
Doppler frequency drift and timing error were considered in state transform equations.
状态方程综合考虑了多普勒频移、定时误差。
The realization of location using the difference of doppler frequency is discussed, the formula for the location error is derived and its simplification form with data simulation is presented.
讨论了多普勒频率差定位技术的实现方法，推导了定位误差公式，并给出了实际使用时的简化而直观的形式，同时进行了数值模拟。
As quantitative bind now measurement was in peripheral vessels by pulsed Doppler ultrasound, SV size was selected selected for decreasing measurement error.
建议在外周血管血流定量检查时，正确选用SV大小，以便减小测量误差。
As for the characters of the Doppler Radar radial velocity data, the single variable background error covariance is used. And the anisotropic covariance function is adopted in the horizontal plane.
其根据多普勒雷达径向速度资料的特点，水平方向采用非各向同性的单变量背景场误差协方差函数。
The acquisition performance of the system had been analyzed in detail with phase error of PN sequences, Doppler shift and background noise taken into consideration.
在综合考虑伪码相位误差，多普勒频移和噪声干扰的基础上，详细分析了系统的捕获性能。
The state equation and error analysis of SINS combined with globe positioning system (GPS) and Doppler navigation system (DNS) were also presented.
给出了SINS与全球卫星定位系统(GPS)、多普勒导航系统(DNS)组合导航系统的状态方程和误差分析，在给定条件下进行了仿真试验。
Abstract : When using the Range-Doppler model for SAR image geometric correction, the error of satellite orbit, imaging parameter and DEM elevation will affect the geometric correction accuracy.
摘要 ：使用距离多普勒模型进行SAR影象几何校正时，卫星轨道误差、系统成像参数误差和DEM高程的误差会影响几何校正精度。
But the Chinese Remainder Theorem cannot solve the error and the blind region made in range and doppler velocity measurements.
但是，单靠中国余数定理仍无法解决距离测量和多普勒频率测量中的误差和遮挡问题。
Linear phase error leads to that the estimated target location offsets from its original location in airborne SAR imaging, and the Doppler centroid frequency will be changed.
线性相位误差导致机载SAR成像后目标的位置发生偏离，从而改变多普勒中心频率。研究线性相位误差的特点，提出一种改进的杂波锁定估计方法。
When the DPCA condition is not satisfied, the error of sampling position can be compensated by a linear phase in Doppler frequency domain.
在不满足DPCA条件时，采用在多普勒频域乘以线性相位的方法来实现平动补偿。
Since the INS/GPS does not meet the need of imaging, Doppler parameters are obtained from SAR raw data to compensate the motion error.
由于INS/GPS数据难以满足成像精度要求，从回波数据中提取运动参数，用于运动补偿。
During this while, the Doppler frequencies of the targets are changing and the spectrum of these targets are easy to arise a aliasing error when the rate of Doppler frequencies is large.
在这期间，目标本身的多普勒频率又是变化的，当多普勒频率变化率较大时，容易产生频普的混叠。
During this while, the Doppler frequencies of the targets are changing and the spectrum of these targets are easy to arise a aliasing error when the rate of Doppler frequencies is large.
在这期间，目标本身的多普勒频率又是变化的，当多普勒频率变化率较大时，容易产生频普的混叠。
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