Multi-false target interference method for fast forwarding

Abstract

The invention belongs to the technical field of electronic countermeasures, and discloses a multi-false-target interference method for broadband radar based on single-bit quantization; the method comprises the following steps of: performing down-conversion processing on intercepted radar signals, and performing sampling and single-bit quantization on intermediate-frequency radar signals after down-conversion to effective reduce the requirement of a radar signal on a storage space; then, carrying out convolution operation on the single-bit quantized radar signal and a pre-generated modulation signal, so that interference signals corresponding to a plurality of false targets can be generated; and finally, according to the time sequence requirements of the receiving period and the transmitting period of the intermittent sampling technology, using a transmitting and receiving time-sharing system to carry out intermittent receiving and interference signal transmitting on the radar signals to solve the problem of interference signal lag and increase the number of false targets of the LFM radar. The method can generate a plurality of distance direction false targets for a radar adopting linear frequency modulation (LFM) signals, and has the advantages of small calculation amount, high calculation efficiency, real-time processing and the like.

Description

technical field [0001] The invention belongs to the technical field of electronic countermeasures, and in particular relates to a fast-forwarding multi-false target jamming method. Background technique [0002] False target jamming method is one of the important jamming styles in radar active jamming technology. In modern electronic warfare, modern radar uses waveform coherence and coherent processing technology to process target echo, which can not only extract target distance information, Speed ​​information, azimuth information, and high-resolution imaging of targets can pose a great threat to the survival of targets. In order to reduce the detection of enemy radars to their own targets, both opposing sides will be equipped with jamming equipment of different systems to implement electronic interference to enemy radars and preserve the survival rate of their own targets on the battlefield. According to the interference effect, radar active countermeasures can be divided ...

AI Technical Summary

Problems solved by technology

Generally speaking, the jammer needs to control the amplitude and distance interval of the false target, which requires the use of multipliers and storage resources. When the sampling rate of the jammer is high and the number of false targets generated is large, it often needs to consume a lot of computing resources.

Images