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- radio noise jamming 射频噪声干扰
- The detection performance of receiver to noise jamming signal was improved remarkably by accumulation detection. 通过积累检测显著地改善了接收机对噪声干扰类信号的检测性能。
- New system Radar have good performances and ECCM capability, makes the conventional noise jamming and deception jamming failed. 新体制雷达的出现和应用极大地提高了雷达性能和抗干扰性,使传统的噪声干扰和欺骗干扰相对失效。
- From simulation results, these methods can effectively combat multitone jamming and partial-band noise jamming. 这两种分集结合能有效抗多波道单音干扰或部分频带干扰,对抗干扰效能是非常良好的。
- Abstract: Seism monitoring under ground has higher accuracy with less noise jamming from the ground surface. 中文摘要: 井下地震监测可减少地面噪声干扰、提高地震监测精度。
- What they found, however, was a background hiss of radio noise, reminiscent of the hiss noticed by Dr Penzias and Dr Wilson. 但是,他们却发现了射电噪声的一种背景杂音,这让人联想到彭齐亚斯博士和威尔逊博士当时注意到的嘶声。
- In the first system, we consider three cases, multitone jamming (MTJ), broad-band noise jamming (BBN) and partial-band noise jamming (PBN). 在第一个系统中环境为蓄意人为干扰或窄频带非人为干扰的环境,其中考虑三种干扰型式包括宽频杂讯干扰、部分频带杂讯干扰及多波道单音干扰。
- The smart noise jamming technique is presented based on DRFM due to the increasing of the anti-jamming ability of some new radar system. 针对新体制雷达抗干扰能力强的特点,提出了以DRFM为基础的多种灵巧噪声干扰波形设计方法。
- This method is compared with classical noise jamming technique by means of SJR (Signal to Jamming Ratio) gain and jamming power gain of SAR system. 讨论了这种干扰方法对合成孔径雷达图像的干扰效果。
- For atmospheric radio noise is the main interferential factor, the minimum-mean-error multiuser detector is employed in South China Sea for background noise and near-far problem. 以我国的南海海域为例,其背景噪声主要是大气噪声,针对背景噪声相对较强的远近效应现象,提出利用最小均方误差多用户检测技术的方法,并对其互相关函数进行了理论分析和计算。
- Noise jamming includes blocking, aiming and random pulse jamming, and deception jamming includes transmitting, responding and scattering jamming. 有源压制干扰主要包括阻塞干扰、瞄准式干扰和随机脉冲干扰;
- To implement effective jamming on the modem coherent radar, this paper proposes one smart noise jamming realization scheme based on convolution modulation. 摘要为了对现代新体制相参雷达实施有效的干扰,提出了一种基于卷积调制的灵巧噪声干扰技术实现方案。
- But once the seeker is under a strong noise jamming,the receiver of the seeker becomes saturated,and the maladjusted angle as well as the variance of angle measure become s... 但是在强噪声干扰下,导引头接收机处于饱和状态,失调角及测角方差恶化,从而使其不再具有任何利用价值,必须采取措施加以解决。
- After the signal is decomposed and reconstructed by wavelet functions, the unmeasurabled noise jamming is eliminated, then use power spectrum coefficient method to analyse it. 实验表明这种方法与单一使用功率谱比值法的方法相比,动作模式识别率得到了提高。
- Without the radiotelescope, we didn't know that radio noises came from far in space. 没有射电望远镜,我们不知道无线电波来自遥远的太空。
- In this paper,through the analysis and processing of the measured data of a 2D shipborne radar,an algorithm based on binary integration detection is presented for active noise jamming resistance. 本文结合某型舰载两坐标雷达外场实测数据的分析和处理,提出了采用二进制积累检测算法对有源噪声干扰进行抑制的方法。
- The paper discusses the importance of anti - interference in mechatronics device, analyzes the sources of noise jamming and makes further approach to a antijamming structure for mechatronics device. 讨论了机电一体化装置抗干扰的重要性,分析了噪声来源,并探讨了一种机电一体化装置抗干扰的结构。
- Measurement and analysis of atmospheric radio noise 大气无线电噪声测量与分析
- A transistorize radio takes no time to warm up. 晶体管收音机不需要预热时间。
- He studied radio noise to find out what it could be 当他研究无线电干扰时