A5074750687- Advanced SAR Imaging Techniques
- Radar Systems and Signal Processing
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Image and Signal Denoising Methods
- Machine Fault Diagnosis Techniques
- Blind Source Separation Techniques
- Wireless Signal Modulation Classification
- Microwave Imaging and Scattering Analysis
University of Chinese Academy of Sciences
2021-2023
Aerospace Information Research Institute
2023
Chinese Academy of Sciences
2023
An essentialtask of the electronic support measures system is to deinterleave intercepted radar pulse stream. To improve radars' antijamming capability and adapt radars different application scenarios, signals emitted by various are becoming abundant, causing stream reconnaissancereceiver becomemore more complicated. Apart from fixed repetition interval (PRI) signals, other PRI modulated such as jitter staggered PRI, also appear in The aforementioned defined mixed this article....
In a complex electromagnetic environment, any noise present generally exhibits strong impulsive characteristics. The performance of existing parameter estimation methods carried out in Gaussian white for the linear frequency modulation (LFM) signal degrades or even fails under noise. This paper proposes novel method to address this problem. Firstly, properties piecewise nonlinear amplitude transform (PNAT) are derived. manuscript verifies that PNAT can retain phase information LFM while...
Deception jamming of synthetic aperture radar (SAR) has attracted extensive attention due to its low power consumption and high fidelity advantages. However, existing SAR deception algorithms assume that operates on a linear trajectory. In practice, trajectories often become nonlinear factors such as atmospheric turbulence, which results in the signals lacking two-dimensional spatial variability nonlinear-trajectory echo signal affects imaging quality jamming. This paper proposes new...
Due to the complex range migration characteristics of large squint angle synthetic aperture radar (SAR), it is difficult for traditional SAR deceptive jamming algorithms balance focusing ability and computational efficiency. There an urgent demand proposing a algorithm against in field jamming. This article proposes with angles based on non-linear chirp scaling low azimuth sampling reconstruction (NLCSR). The NLCSR uses high-order approximation high-precision model accurately construct...
Resolution and mapping bandwidth are the two most important image performance indicators that reflect satellite synthetic aperture radar (SAR) imaging reconnaissance capability. The PRI-staggered signal can simultaneously achieve high resolution in azimuth wide swath during SAR imaging, is an form of SAR. It for anti-SAR to de-interleave staggered PRI from mixed signals. To address problem existing de-interleaving algorithms cannot accommodate jitter computationally inefficient, this paper...