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Spectrum estimation precision 光谱估计精度
As one high order spectrum estimation, bispectrum estimation is widely used. 双谱估计是一种应用广泛的高阶谱估计。
It has excellent estimation precision, pairs automatically the x-axis direction cosines with the y-axis direction cosines and suffers no DOA ambiguity. 具有较好的估计精度，能实现方向余弦的自动配对，不造成波达方向的模糊性。
Finally, the influences of the measurement noise and the range of slip on the estimation precision are evaluated . 同时还评估了测量噪声和转差范围对参数识别精度的影响。
Liu, Y., Z.Yu, and S.Jiang, 1990: Cospectrum and quadrature spectrum estimation by the maximum entropy method. 周良明、刘玉光，2003：利用地物光谱仪数据研究水汽对太阳辐射的吸收。
This paper is an application research on the algorithm of Bayesian spectrum estimation. 本课题是对贝叶斯频谱估计算法的应用性研究。
This algorithm has small computation amount load and has high estimation precision of doppler frequency rata-of-change. 算法具有计算量小、多普勒频率变化率估计精度高的优点。
The results showed that EVI was the best index reflecting grassland yield variation,and the average estimation precision of the models was 80%. 结果表明:(1)EVI是反映产草量变化的最好指标,分类构建的模型平均测产精度达到了80%25;
The improvement of the accuracy of the wavelet based evolutionary spectrum estimation is discussed, which is based on the original work of Priestley. 在Priestley提出的基于小波分析进化谱理论基础上 ;对改进进化谱估计的性能进行了研究 .
Since DFT can he calculated via its fast algorithm FFT, the compulation is less than the conventional spatial spectrum estimation algorithm. 由于离散傅里叶变换可以用其快速算法FFT进行计算;较之传统的空间谱估计而言;计算量有很大地减少.
A study cased in Zhejiang Province, China, showed the fact that the three-phase sampling could produce the highest AFI area estimation precision. 用浙江省实际数据计算的结果表明：三相抽样精度明显比其他估计方法高。
The random noises of systems are shown to be restrained effectively through orthonormal scaling transformation, and estimation precision is improved. 从理论上证明了经小波尺度变换后系统随机噪声的方差值减小，即噪声得到有效的抑制，从而大大提高了辨识精度。
To demodulate GMSK signal,DSP is used in receiver to achieve error spectrum estimation,bit synchronization recovery and decode. 为了实现GMSK信号解调，接收机中DSP实现了调制信号的误差频谱估计、位同步恢复及译码。
Because of occlusions and segmentation fragments, the estimation precision is impaired, even result in an unsuccessful tracking. 由于目标阴影、碎块等因素，估计精度受到影响，甚至导致跟踪的失败。
The simulation re-sups show that the proposed method can nreatly improve the state estimation precision of sensor array passive trackinn system. 在很多方面的应用已经逐渐有替代广义卡尔曼滤波的趋势。
A phase detection method based on the Bayesian spectrum estimation is proposed for improving the accuracy of traditional phase analysis method in this paper. 摘要针对传统的相移分析方法误差大的问题，通过合理的选取信号模型，采用贝叶斯频谱估计算法对实验中输入输出信号进行了相位识别。
Objective To improve the estimation and the percentage of electrogastrogram(EGG)slow wave rhythm with power spectrum estimation and calculation rule set. 目的从功率谱估计和计算规则两方面对胃电慢波节律百分比的计算方法进行改进。
The efficient method of setting and adjusting parameters highly improves the estimation precision, making the RSA more suitable for long-term real-time estimation. 同时设计有效的参数初值设置和调整方法，改善了估计的准确性，使之更适用于长序列实时运动估计。
In addition, the key algorithm of the classic periodogram spectrum estimation has been improved with split-radix algorithm that can shorten the time of program executing. 另外，采用分裂基算法对经典的周期图谱估计的关键算法进行了改进，可缩短程序运行时间。
Based on the characteristic of target echo in ISAR, the original method of Doppler center estimation is ameliorated to increase the motion parameter estimation precision. 针对ISAR中目标回波的特点，对原始的多普勒中心估计方法进行了改进，提高了运动参数估计精度。