By exploring the phase information among symbols of the Direct Sequence Spread Spectrum (DS-SS) signal, a novel de-noising approach, used in low signal noise ratio environment, is presented.
利用DS -SS信号符号间相位信息，提出了一种可工作于低信噪比下的直接序列扩谱(DS - SS)信号噪声抑制方法。
The algorithm is applicable to precise measuring of the PN code phase of satellite positioning signals and spread-spectrum ranging signals.
该算法的主要应用领域为卫星定位信号和直序扩频测距信号PN码相位的精确测量。
Aiming at the spectrum spread problem of traditional digital modulation signals, a time-phase modulation (TPM) method with abrupt phase change characteristic is proposed.
针对传统数字调制信号频谱扩展问题，提出具有相位突变特性的时相调制(TPM)方式。
Based on traditional spread-spectrum watermarking, we discuss an asymmetric watermarking scheme using random-phase-shift.
在传统扩频水印技术的基础上，我们讨论了一种基于相位偏移的非对称数字水印方案。
A method based on phase correction is proposed to enhance the performance of suppressing narrow-band interference of base-band direct sequence spread spectrum (DSSS) receiver.
为提高基带直扩接收机的抗窄带干扰能力，提出了一种相位校正方法。
Considering the spread spectrum orientation systems using difference carrier phase to measure distance, this paper proposed a method for acquiring difference carrier phase by using pilot symbol.
考虑利用载波相位进行测距的扩频无线电导航系统，该文提出了一种基于导引符号的两导航台载波差分相位的提取方法。
Based on the model, the BER Bit Error Ratio performance is analyzed for narrow-band modulation and wide-band spread -spectrum modulation of coherent PSK Phase Shift Key...
结果表明移动卫星信道中存在的多径和阴影现象使系统的误码性能恶化，而采用宽带扩频调制则可极大改善系统的性能。
Based on the model, the BER Bit Error Ratio performance is analyzed for narrow-band modulation and wide-band spread -spectrum modulation of coherent PSK Phase Shift Key...
结果表明移动卫星信道中存在的多径和阴影现象使系统的误码性能恶化，而采用宽带扩频调制则可极大改善系统的性能。
应用推荐