| 1. | Computer simulation of variable step - size fast adaptive algorithm for suppressing narrowband interference in ds - ss system
分布式算法在测井曲线处理系统中的应用 |
| 2. | An algorithm for the suppression of narrowband interference in the direct sequence spread - spectrum ( dsss ) systems is presented
摘要提出了直接序列扩频通信系统中抑制窄带干扰的一种算法。 |
| 3. | Therefore finding a more efficient method to decrease the narrowband interference becomes one key problem for a good communication system
因此，采取更加有效的措施抑制通信系统中的窄带干扰是通信系统中的一项关键技术。 |
| 4. | Road vehicles - electromagnetic compatibility test procedure of automotive components - part 6 : qualification of the immunity to narrowband interference according to the current injection procedure
道路车辆.汽车部件的电磁兼容性试验程序.第4部分:根据通用喷射程序窄带抗干扰性的合格鉴定 |
| 5. | Road vehicles - electromagnetic compatibility test procedure of automotive components - part 5 : qualification of the immunity to narrowband interference according to theabsorptive chamber procedure
道路车辆.汽车组件的电磁兼容性试验规程.第5部分:根据吸收室规程进行抗窄带干涉性的合格鉴定 |
| 6. | On the other hand , the present research results were mainly about the narrowband interference mitigation , and the influence of wideband nonstationary interference for dsss is more important , so we should research more noval anti - jam technology and systems in the military environment
此外,大多数抗干扰研究成果集中在窄带干扰抑制上,宽带非平稳干扰对扩频系统的影响逐渐引起人们重视。因此,需要研究新型的抗干扰技术与体系。 |
| 7. | After discussing this kind of filter in this paper in detail , the grads algorithm in time domain and frequency domain is set up when the change of frequency is slow , so it means the algorithm only process the narrowband interference what it changes slowly
论文对数字自适应外差滤波器进行了详细的研究，建立了自适应外差滤波器的时域和频域的梯度算法，该算法的推导使用了外差频率变化缓慢的假设，这意味着该滤波器只能够处理慢变的窄带干扰。 |
| 8. | According to the ideology of software radio theory , the realization of intermediate frequency ( if ) digitalized direct sequence spread spectrum ( dsss ) receiver is one of the focuses in dsss communications study . it is of great value to deploy narrowband interference ( nbi ) suppression techniques in if digitalized dsss receiver for commercial and military applications
根据中频数字化这一软件无线电思想实现扩频接收机是目前扩频通信研究的热点,在中频数字化扩频接收机体系结构内研究窄带干扰抑制技术具有重要的商业和军事应用价值。 |
| 9. | Thus , the frequency domain adaptive filter is well suited to a multi - narrowband interference scenario , the paper studied frequency domain adaptive algorithms , carried out analysis and computer simulations . simulation results : for gold codes ds - ss signal of length 63 , 4 interferences of signal to interference ratio ( sir ) 40 ub or 4 narrowband interferences of signal to interference ratio ( sir ) 40 db and frequency - spectrum bandwidth 12 percent of the whole bandwidth , the sir improvement is better than 20db
仿真结果指出，在输入信号为干扰是4个等强度的多音干扰或4个频谱带宽占信号总带宽12的强窄带干扰(干信比为40db )的扩频信号(码长为63的gold码序列)情况下，算法的干扰抑制比均优于20db 。 |
| 10. | It ' s impossible to avoid all interference in the communication system . especially the narrowband interference , which generates much higher power density than the wideband interference does , has a great influence on the quality of the communication , even it can hinder the normal communication
干扰不可避免地存在于通信系统中，尤其是窄带干扰，它产生的功率密度比宽带干扰产生的功率密度高得多，它们对通信质量的好坏，甚至能否进行正常的通信有着极大的影响。 |
