| 1. | A method , which uses the spectrum of output signals and response of digital filters to restrict the lfm signal spectrum , is studied
( 4 )研究了信道融合方法。基于滤波器特征,研究了频域加窗的信道拼接方法。 |
| 2. | Based on the results , the structure of the receiver is optimized to obtain better performance of parameter estimation . ( 4 ) the methods of signal spectrum reconstructing are discussed
在常规线性调频信号参数估计算法基础上,研究了信道化方案的信道参数对参数估计的影响。 |
| 3. | Abstract : speech signal spectrum analysis is the time - varied spectrum analysis . fft technique on speech signal spectrum analysis are discussed in detail in this paper
文摘:针对语音信号频谱分析实际上是时变频谱分析的特性，详细地讨论了用fft技术对语音进行频谱分析过程中的方法问题。 |
| 4. | The method using the part imitate extract the continuous spectrum of the signal spectrum , than extract line - spectrum from the relatively flat line - spectrum by subtract it from the former spectrum
该方法利用分段拟合方法拟合出信号功率谱的连续部分，从原始功率谱中减去连续谱得到拉平的线谱分布，然后进行线谱特征提取。 |
| 5. | According to the carrier wave leakage and mirror wave interference in the signal generation , this paper analyzes the source of waveform distortion and its influence to signal spectrum and pulse compression result
针对生成信号中存在的载漏和镜像等失真,本文对波形失真来源及其对信号频谱及脉压结果的影响进行了全面分析与仿真。 |
| 6. | It will become the basic technology of those domains . in accordance to the characteristics of satellite communication system , it is necessary to limit the bandwidth of the signal spectrum and to decrease the isi
针对卫星通信信道的特点，为了节约频谱资源，需要对发射信号进行带限；为使传输误码率足够小，必须最大限度减小码间干扰。 |
| 7. | This article discusses the vehicular short - wave single - channel direction finding system and gives a new direction finding algorithm based on signal spectrum correlation , to improve the system ' s performance to when coping with single side band signals
文中针对车载短波单通道测向系统，提出了一种新的基于信号谱相关的测向算法，改善了系统对单边带信号的测向性能。 |
| 8. | As a result , the low - frequency contents increase as the centroid of signal spectrum experiences a downshift , in case that frequency is independent on quality factor , the offset of the centroid frequency is proportional to the integral of attenuation factor along wavepath , thus can he used to reconstruct the attenuation distribution
假设介质的品质因子与频率无关，地震波主频的偏移量与吸收系数对传播路径的积分成比例，则通过它们之间的关系可以估测介质的吸收系数。 |
| 9. | According to the characteristic of digital adaptive heterodyne filter and the conception of interference counteraction , the paper presents a new structure to enable the filter track the interference signal precisely and control the width and depth of notch . through simulation , it is demonstrated that the new structure can suppress one or more interference signals and the filtering operation has little influence on signal spectrum
论文利用数字自适应外差滤波器的特点，运用干扰抵消的概念，提出了一种新的结构，能使滤波器精确跟踪干扰信号，并能控制陷波的宽度和深度，经仿真验证，该结构的滤波器能较好的抑制一个和多个干扰，同时滤除干扰后对信号频谱的损害较小。 |
