Jamming Style Research Articles

A Smart Noise Jamming Suppression Method Based on Atomic Dictionary Parameter Optimization Decomposition

Smart noise jamming is a new jamming style against radar, which plays an important role in modern radar electronic warfare. In order to solve the complex problem of convolutional smart noise jamming suppression with different time delay and jamming frequency modulation, a novel jamming suppression method based on the optimized atomic dictionary decomposition by estimating significant jamming parameters is proposed in this paper. First, the dual channel jamming signal information is obtained by designing twinning waveforms, then the independent estimation of time delay and jamming frequency parameters are established based on the spatial position sequences of the false targets. After that, the atomic dictionary is optimized by utilizing the obtained jamming parameters to achieve more effective decomposition. The performance of the new jamming suppression method is analyzed and verified by experimental simulations. The results show that this method can feasibly and practicably suppress the smart noise jamming with a deceptive effect, and the atomic decomposition efficiency is highly improved.

Joint communication interference system design based on parameter modulation.

In this paper, a joint communication interference integration signal waveform is proposed to satisfy the need of electronic system integration in civil and military uses, and mitigate the tension of spectrum resource. We design the system structure of the integrated signal model and propose the communication receiving processing flow of the integrated system. We utilize the dense false-target jamming style to raise the constant false alarm rate detection threshold via the delay superposition of multiple groups of frequency modulation (FM) slope mismatch jamming signals, which can play a role in protecting our target from being detected. Furthermore, linear frequency modulation (LFM) signals with different FM slopes and Doppler frequencies are obtained via the modulation mapping of communication data; thus, a single LFM signal can carry n bit data. Through correlation processing and frequency detection, code sequence information can be obtained to achieve communication function. The simulation results show that the integrated signal has the effect of shielding and jamming the pulse compression radar. Moreover, the system has a better bit error rate and a high communication rate, which can ensure that the communication task of sending accurate instructions is completed while implementing effective interference.

Research on effective jamming style of projectile-carried communication for FH communication radio under common modulation systems

This work addresses the effective jamming style of projectile-carried communication for frequency hopping radio with different modulation by applying simulation verification via OPNET platform to construct the projectile-carried communication jamming system model. A general projectile-carried communication jamming style based on the signal combination of sweep saw-tooth wave and noise frequency modulation is proposed and analyzed. The network model of projectile-carried communication jamming system is constructed, and then the model building process of frequency hopping radio from the two aspects of transmitter model and receiver model is deeply elaborated. We demonstrate that the general projectile-carried communication jamming style has good jamming effect on the frequency hopping radio receivers with five modulation modes of 2FSK, 2PSK, 2DPSK, MSK and GMSK by comparing the simulation results, including receiving throughput, end-to-end delay, time delay of wireless channel access, delivery rate of synchronized header message, signal-to-noise ratio, bit error rate, packet loss rate, remaining power of jammer. Among them, the bit error rate of radio receiver with five modulation modes is more than 20%.

Jamming decision under condition of incomplete jamming rule library

To solve the problem of the low rate of template matching (TM) jamming decision method under the incomplete jamming rule library condition in traditional electronic warfare, a clustering and resampling – support vector machine (CRS-SVM) jamming decision method, is proposed. For the air-to-air scene of airborne multifunctional fire control radar, the inter-pulse pulse and intra-pulse features are extracted, and a jamming rule library that is divided into the source domain and target domain sample according to the missing rate is constructed in this scene. DBSCAN algorithm is used to cluster the dataset, and the structure information is found. The training samples are generated via resampling. SVM is used to transform the inner product of the target domain space into the inner product of the feature space to establish the feature space hyperplane. The target domain samples are labelled as the corresponding jamming style label to realise the fast and effective decision. The experiment results show that the proposed method can effectively improve the accuracy and robustness of jamming decision compared with the traditional TM method.

Jamming Attacks in Wireless Network

在无线网络中,媒介的广播、共享特性使其易于受到干扰性质的拒绝服务攻击,严重影响着网络的性能和安全.分析了当前存在的干扰攻击测度标准和攻击模型;从干扰攻击的检测、防御以及干扰源定位3 个方面对当前具有代表性的研究工作进行了详细的分析和总结.最后给出未来可能的研究方向和研究重点.;The broadcast nature of wireless network with sharing medium makes it particularly vulnerable to the jamming style of the denial of service attack, which is a great threat to network performance and security. In this paper, the state-of-the-art jamming metrics and jamming models are first analyzed, and the recent literatures on jamming attack are surveyed in detail in terms of jamming detection, defense and jammer localization. Finally, the possible future trends and key points about this issue are solved.