纯惯性导航或多普勒导航的一个共同缺点是：一般都具有随时问或距离增长的位置误差，这就需要有一个外基准系统。
A simple inertial or Doppler navigation has a common defect that position errors are always increasing with flight time or distance, therefore an external reference system is necessary.
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 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.
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。
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.
多普勒频率的测频精度愈高，反演口径分布的误差愈小。
The higher accuracy of measuring the Doppler frequencies, the less error of the aperture distribution.
状态方程综合考虑了多普勒频移、定时误差。
Doppler frequency drift and timing error were considered in state transform equations.
本文针对载机惯导参数误差较大的实际情况，提出了改进的频域和时域多普勒质心估计算法。
Under the condition that marked inertial navigation units(INU) measurement errors do exist, two new Doppler centroid estimation techniques in frequency domain and time domain were proposed.
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。
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.
在均匀线阵存在误差的情况下，提出了一种信号波达方向和多普勒频率的估计方法。
An estimation method of direction of arrival (DoA) and Doppler frequency for signals in the presence of array errors is proposed.
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 acquisition performance of the system had been analyzed in detail with phase error of PN sequences, Doppler shift and background noise taken into consideration.
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。
The state equation and error analysis of SINS combined with globe positioning system (GPS) and Doppler navigation system (DNS) were also presented.
同时，此误差校正方法同样适合高精度激光多普勒扫描测量系统。
And the revising methods were also adapted to precise laser Doppler scanning measurement system.
分析了这两对双多普勒雷达径向速度测量误差引起的风场反演的误差。
The errors of wind derived from the two Doppler radar systems are estimated.
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。
But the Chinese Remainder Theorem cannot solve the error and the blind region made in range and doppler velocity measurements.
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。
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.
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。
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.
实验结果表明，多普勒测速仪能够 有效地抑制惯导 误差随时间积累的缺点，提高了导航定位的精度。
The result of surface water experiment demonstrates that DVL can eliminate the accumulated errors of inertial navigation system and improve navigation accuracy.
实验结果表明，多普勒测速仪能够 有效地抑制惯导 误差随时间积累的缺点，提高了导航定位的精度。
The result of surface water experiment demonstrates that DVL can eliminate the accumulated errors of inertial navigation system and improve navigation accuracy.
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