DSSS signal的意思|示意

In consideration of the low signal-noise-ratio (SNR) of DSSS signals, a method of estimating the SNR was given by resolving the eigenvalue of the received signal correlation matrix.

针对直接序列扩频信号工作中信噪比较低的特点，提出了一种通过求解接收信号相关矩阵的特征值来估计信号信噪比的方法。

The problem of PN code acquisition is the key technique in DSSS receiver when there are narrowband interferences in the received signal.

本文针对新型的卫星用接收机伪码捕获的性能指标要求 ，设计了一种基于中频直接采样数字化的伪码捕获算法。

In a lot of antijamming techniques for direct spread spectrum system (DSSS), the DSSS signal is approximately considered as a stationary process.

众多的扩频通信抗干扰技术往往把有用扩频信号近似看作平稳随机过程。

It would also need good shielding and special electronics to filter the DSSS signal from the radio-noise created by the Earth, the sun and the rest of the galaxy.

同时还需要良好的外层保护和特殊电子器件，从地球、太阳及其太空中传来的无线电“杂音”中过滤出dsss信号。

One is the detection of low SNR DSSS signal and extraction of length of PN code, the other is detection of BPSK signal from multi signals.

对直扩信号侦测的计算机模拟结果表明，该方法不仅能检测到低信噪比的此类信号，而且能提取到扩频码周期等参数。

The digital signal processing techniques were used on the DSSS signal simulation and verification feature extraction. And the performance of each detection and advantages and disadvantages were given.

采用上述数字信号处理技术分别对DSSS信号进行特征提取的仿真和验证，并给出了每种检测技术的性能及优缺点。