Hybrid Domain Efficient Modulation-Based Deceptive Jamming Algorithm for Nonlinear-Trajectory Synthetic Aperture Radar
نویسندگان
چکیده
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 algorithm for airborne based hybrid domain efficient (HDE) modulation. derives frequency response (JFR) with trajectory deviation azimuth time–frequency domain. Based modulation, jammer calculates JFR constructs real-time pulse by at each moment. The modulation process only involves range Fourier transform complex multiplication, combining computational efficiency flexibility. validity constraints have been analyzed ensure focusing ability signal. Simulation complexity analysis validate excellent performance efficiency.
منابع مشابه
the range doppler algorithm for synthetic aperture radar moving on a ballistic trajectory
in this paper, the range doppler algorithm (rda) for synthetic aperture radar moving on a ballistic trajectory is presented. the 3-dimension acceleration and non-uniform trajectory cause decreases in efficiency of conventional imaging algorithms. in this paper, the analytical expression for the 2-d signal spectrum for ballistic trajectory using taylor series expansion and series reversion is de...
متن کاملCoregistration Based on Sift Algorithm for Synthetic Aperture Radar Interferometry
Single-look complex image coregistration is the key step of Synthetic Aperture Radar(SAR) Interferometry. The precision of the coregistration results have a direct effect on the quality of the SAR interferogram generated, thereby it will influence the accuracy of extracting DEM. In this paper, SIFT (Scale Invariant Feature Transform) algorithm will be used in Single-look complex image coregistr...
متن کاملan automatic algorithm based on angular histogram for corregistartion of synthetic aperture radar images
coregistration of optical and radar imageries is a major pre-processing step in many remote sensing applications including change detection and interferometric processing. specially, the coregistration faced more difficulties in radar imageries due to the high noise level and intense spatial-temporal decorrelation. hence, non-automatic coregistration methods are much more time consuming and ine...
متن کاملSpeckle Reduction in Synthetic Aperture Radar Images in Wavelet Domain Using Laplace Distribution
Speckle is a granular noise-like phenomenon which appears in Synthetic Aperture Radar (SAR) images due to coherent properties of SAR systems. The presence of speckle complicates both human and automatic analysis of SAR images. As a result, speckle reduction is an important preprocessing step for many SAR remote sensing applications. Speckle reduction can be made through multi-looking during the...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Remote Sensing
سال: 2023
ISSN: ['2315-4632', '2315-4675']
DOI: https://doi.org/10.3390/rs15092446