| 1. | Parameters estimation of nonlinear fm signals
非线性调频信号参数估计算法 |
| 2. | Am - fm signal generator
Fm - am标准信号发生器立体声信号发生器 |
| 3. | Chapter 3 considers location of a stationary target with time - varying emitting signal , such as frequency hopping signal and linear fm signal
在第三章里，主要研究了频率时变信号（如频率捷变信号和线性调频信号）的定位算法。 |
| 4. | If two fm signals are on the same frequency at the same time , there will still be a heterodyne or beat note ( unless one is 6 db stronger than the other )
通常商业电台会滤掉这些亚音频，但我们的业馀电台并不进行过滤，所以我们可能能听到这个频率的音频。 |
| 5. | That noise fm signal emalates tv sound fm signal researchs above two question about correlative detection and restrainning sidelobe . the research ' s result is compared with linear fm emulational research ' s
用噪声调频信号对电视伴音调频信号进行仿真研究上述提到的相关检测和旁瓣抑制问题，并与线性调频信号仿真研究相比较。 |
| 6. | In chapter 3 , analyzing the feasibility of if digital receiver , simulate the ad sampling , ddc and am / fm signal ' s software demodulation by system simulation software - systemview
本文在第三章对中频数字接收机方案的可行性作了分析，并通过系统仿真工具systemview对a d ，数字下变频( ddc )及am 、 fm等调制信号的软件解调作了仿真。 |
| 7. | In this dissertation , some key chips of control circuits are introduced . it analyses the theory about pll - fm and fm signal demodulation , and give out realization of corresponding circuit and characteristic analysis
文中给出了控制电路中关键芯片的介绍，对锁相调频pll - fm及fm信号的解调的理论原理进行了详细分析，并给出了相应的电路实现及有关电路的特性分析。 |
| 8. | 3 . a fast algorithm , based on the jointly fractional operators , is proposed for the multicomponent linear - fm signals under low snr environment . moreover , the performance of the detection statistics is derived by performing the output snr analysis
3 .结合分数阶自相关和分数阶傅立叶变换,将传统二维极值搜索转变为一维极值搜索,推出了线性调频信号参数估计快速算法。 |
| 9. | 3 . in the process of restraining distance and doppler planar sidelobe , linear fm signal restrains sidelobe well , noise fm signal has definited impact on restrainning sidelobe in concrete circumstance by tring diversified methods
3 、在二维距离-速度旁瓣抑制中，线性调频信号抑制效果良好，而抑制噪声调频信号的旁瓣须根据具体情况、用多种方法进行尝试、有一定旁瓣抑制效果。 |
| 10. | The fruits of emulational research are obtained : 1 the method of divided planar correlation deal with wonderfully and can detect the target information of tv sound fm signal about time difference and doppler frequency with this understanding of - 20db snr
仿真研究成果： 1 、分段二维相关处理方法效果不错，能在- 20db信噪比情况下，可靠地检测到电视伴音调频目标信号的时差与多普勒频率信息。 |
