Multi-Scene Deception Jamming on SAR Imaging With FDA Antenna

Abstract

Most of the existing deception jamming techniques focus on designing effective jamming signals for static targets or scenes. This paper proposes a multi-scene deception jamming against synthetic aperture radar (SAR) imaging with frequency diverse array (FDA) antenna. Different from traditional singleelement and phased-array antennas, FDA antenna employs a small frequency offset across the array elements to produce angle-, range-and even time-dependent transmit beampattern, which brings bright prospect for the application of new jamming techniques against SAR imaging. Such a new method will generate many false targets or multiple deception scenes for the jammed SAR, which helps jam better on the static scene and moving target. Moreover, the location and number of false targets can be manipulated. This paper will illustrate the FDA-based deception jamming against SAR imaging, specially designed waveform and the relationship between the number of false targets or scenes and FDA parameters. The relationship between the location of false targets and the position of jammer will also be described in detail. All proposed methods are validated by extensive simulation results. INDEX TERMS Synthetic aperture radar (SAR), frequency diverse array (FDA), frequency offset, multiscene deception jamming, manipulation.

A GAN-Based Augmentation Scheme for SAR Deceptive Jamming Templates with Shadows

“…This process continues until the discriminator D n is unable to distinguish between the real and fake samples. A SAR deception jamming template with shadows, which is denoted by u n , is composed of three regions with different features: the target region I t , the shadow region I s , and the background region I b , as given in Equation (8). The target region I t contains complex and bright detailed information with regular shapes; a shadow region I s is characterized by darker areas and relatively clean content; the background region I b usually exhibits distinct texture details and lacks clear geometric shapes, making it easier for the network to learn.…”

“…Synthetic aperture radar (SAR) deception jamming technology is effective in concealing important military facilities and operational equipment [1][2][3], enabling covert military operations [4,5]. The SAR deception jamming technology has the advantage of low power requirements, making it a popular research topic [6][7][8][9]. At present, the schemes for SAR deception jamming at the software level include using a SAR deception jamming template library and electromagnetic scattering models.…”

A Novel FDA-MIMO Deceptive Jamming Method for Neutralizing Phased Array Radar

“…A novel approach flipped in [19], based on fre-quency diverse arrays, to confuse opponent radar by displaying him multiple dummy targets with the help of friendly Global Positioning System (GPS). Another research is contributed in [20] which also uses Frequency Diverse Array (FDA) to develop multi-scene deception to misguide the opponent radar, creation of the number of dummy targets is dependent on the length of array elements. A good wave scattering technique is invented in [21] using FDA radar which is exercised to produce multiple fake target deception.…”

A Novel Deceptive Jamming Approach for Hiding Actual Target and Generating False Targets

“…Paper in the reference [37] presented a deception jamming method which generates multiple scenes (multiple false targets) using FDA radar antenna, where number of false targets depend on the number of antenna array elements. The technique in reference [38] uses the simplest way to generate nulls towards the desired direction and range in order to suppress the offered range-angle dependent interference jamming, but this technique is unable to offer deceptive jamming to confuse the opponent radar, and it also does not hide its own target from the vision of the opponent radar.…”