For the former, the classic theory of signal detection and estimation methods can be used to solve the problem;
占用空闲频段的情况用经典信号检测与估计理论的方法即可以完成检测；
Traditional methods of signal detection and estimation were based on the assumption that the background noise is white.
传统的信号检测和估计方法一般是建立在背景噪声是白噪声这一假设基础之上。
First, the definition and properties of HOS are introduced. We especially notice that HOS is insensitive to Gaussian process. This is the theoretical basis of signal detection and estimation.
文章首先介绍了高阶统计量的定义和性质，特别指出了高阶统计量对高斯过程不敏感，这是我们利用它进行信号检测和估计的理论依据。
This is a valuable on the MIMO channel estimation and signal detection receiving end of the article.
这是一篇比较有价值的关于MIMO信道估计与接收端信号检测的文章。
In the meantime the correlation algorithm is combined with periodic spectral estimation, and a further improvement of the signal detection ability using this method is proved.
同时提出相关法与周期谱估计相结合的方法，并证明该方法可进一步改善信号的检测能力。
Three methods for analyzing and processing the laser scattering signal of bubbles in water, the threshold detection, noise elimination processing and power spectral estimation, are put forward.
提出了阈值检测、降噪处理和功率谱估计三种分析和处理水中气泡激光散射信号的方法。
The detection and parameter estimation of DS signal are studied in this paper. Cyclic period chart spectrum estimation is used on parameter estimation.
本文研究了直扩信号的检测和参数估计两方面内容，参数估计使用了循环周期图谱估计方法。
Based on joint time and frequency offset estimation, a reliable signal detection scheme is obtained by modulated pilot symbols using an m-sequence.
方案利用时频联合估计来得到可靠的信号检测，并从导频符号估计时间和频率偏移。
Under this background, we try to review recent progress in study on acoustic vector sensor signal processing, such as signal detection, DOA estimation, beamforming, and so on.
在此背景下，本文尝试综述声矢量传感器信号处理研究的当前进展，如信号检测、DOA估计、波束形成等。
On the basis of signal phase matching principle and the method of least squares of parameter estimation, a method for single-frequency signal detection is presented in this paper.
根据信号相位匹配原理及其信号参数的最小二乘估计方法，提出了一种单频信号检测方法。
Following the spectral correlation theory and wavelet transform theory, a method named as wavelet spectral correlation method is proposed for BPSK signal detection and chip rate estimation.
在谱相关理论和小波变换理论的基础上，提出了小波谱相关方法实现BPS K信号检测与码元速率的提取。
Nowadays, studies on MIMO radar mainly focus on DOA estimation, target detection performance analysis, waveform design and multi-channel signal modeling of active radars.
目前，国内外对MIMO雷达的研究主要集中在有源mimo雷达DOA估计、目标检测性能分析和波形设计与多通道信号模型等方面。
From the viewpoint of considering signal detection and bearing estimation in a unified way, this beamforming is optimum to array signal processing.
从统一考虑信号检测和方位估计的观点看来，这种波束形成方法最适用于信号的基阵处理。
The simulation results show that this method is not only suitable for the detection and the parameter estimation of multi target radar echo signal, but also good at reducing noise.
仿真实验表明，该方法能有效地检测多目标雷达回波信号并准确地估计其参数，而且有较好的抗噪声性能。
Firstly, the spectrum properties of FSK signal are introduced and the principle of spectrum estimation for FSK signal detection is discussed in detail.
首先介绍了FSK信号的频谱特性，详细分析了FSK信号谱估计检测理论。
This dissertation is devoted to the study of noise suppression, sinusoid signal parameters estimation and detection.
本文致力于研究噪声抵消、正弦信号检测及参数估计等问题。
This dissertation is devoted to the study of noise suppression, sinusoid signal parameters estimation and detection.
本文致力于研究噪声抵消、正弦信号检测及参数估计等问题。
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