但盲估计算法，如子空间分解法等，需要较大的样本值，收敛速率慢，不利于实时信道估计。
But the blind estimation algorithm, for example, the sub-space decomposition, is not good for real time estimation because it requires large received signals, and has low estimation convergence rate.
水声信道多径参数的实时估计对于提高接收机性能有重要意义。
It is important to enhance receiver performance by real time estimating the multipath parameters of underwater acoustic channels.
其中信道信息由自适应滤波器实时估计。
Meanwhile, the channel information can be estimated by adaptive filter.
该估计器能以较低的计算复杂度给出RDS、噪声方差、信道功率和信噪比等多个实时信道参数的准确估计。
The estimator presents both the estimate of instantaneous RDS and the estimates of noise variance, channel power and SNR of current channel with low computational comp.
只有对信号在多径衰落信道中所经历的衰落做出准确实时的估计，系统才可以使用能够提高接收机误比特率性能的相干检测。
Communication systems can enhance their BER performance by using coherence detection only when they could make precise and real-time estimation of fading coefficients of multipath channel.
同步跟踪则由多径跟踪的结果精确估计PN序列码相位，并实时跟踪信道各径成分由于多普勒效应产生的时延漂移。
Following, code tracking confirm the PN code phase precisely and track every multipath component's delay drifting due to Doppler effect.
同步跟踪则由多径跟踪的结果精确估计PN序列码相位，并实时跟踪信道各径成分由于多普勒效应产生的时延漂移。
Following, code tracking confirm the PN code phase precisely and track every multipath component's delay drifting due to Doppler effect.
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