| Phased array radar as a modern battlefield on the key role in the battlefield information access has a crucial role.In the face of increasingly complex electromagnetic environment and operational requirements,the traditional interference can't cause effective damage to the target radar,it is difficult to achieve the desired combat effect,efficient anti-phased array radar has become a hot field of electronic research hot research The And the new distributed suppression interference provides a good idea of interference.It combines the traditional suppression interference form and distributes the distributed interference in the distance and space distribution advantage,and its interference deployment form is extensive Applicable to a variety of interference targets and other characteristics make it a more effective way of electronic countermeasures.This paper focuses on the distributed suppression interference technology of phased array system radar.The main work and research results are as follows:(1)The main components of phased array radar system are introduced,and the radar signal model,adaptive antenna model and phased array radar spatial echo signal model are established.The influence of anti-jamming technology,such as adaptive antenna,matched filter and CFAR,on the suppression interference is analyzed.(2)Combined with the characteristics of phased array radar and the characteristics of the target movement itself,the establishment of distributed suppression jamming model.The number of interfering nodes required to cover the azimuth angle of the azimuth angle and the relationship between the power and energy in the interfering node,and the relationship between the power and energy in the interference node,and the effective interference trajectory of the interfering node is obtained from the node coverage radar scanning beam.Phased array radar is distributed to suppress the interference of the whole space interference node.(3)The influence of the inter-node correlation on the interference effect of the phased array radar is analyzed,and the relationship between the number of interfering nodes,the signal correlation between the interfering nodes and the inter-node power is analyzed and simulated.,And the effective requirements of interfering phased array radar are obtained,which provide the theoretical basis for the reasonable deployment of interference nodes.(4)Based on the characteristics of phased array radar signal receiver,the interference signal form of single node in distributed interference node is researched further.The theoretical analysis and simulation results show that the improved frequency-shift convolution noise interference is more suitable for the implementation of high efficiency suppression of phased array radar,which is suitable for noise interference interference and convolution noise interference signal form.Finally,the validity of the jamming is proved by the combination of the whole distributed suppression interfering node signal,and the relevant theoretical basis is provided for the implementation of distributed suppression interference. |
PDF Full Text Request