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A 24-GHz radar system for biomedical applications is designed, fabricated, and tested. The proposed radar system includes a flexible radio frequency (RF) board and a rigid baseband board. The RF board integrates two 4×4 patch arrays, a voltage controlled oscillator (VCO), two low noise amplifiers (LNA), and a six-port structure. The baseband board has baseband amplifiers as well as an on-board sawtooth...
A novel algorithm for estimating the rotation angle in inverse synthetic aperture radar imaging by generally considering the received signals as cubic phase signals is presented. The rotation angle is determined by the coefficients of the cubic phase signals, and the results of real data demonstrate the validity of the algorithm.
Phase correction is a key step of inverse synthetic aperture radar (ISAR) motion compensation, which seriously affects the ISAR focusing and imaging quality. As a typical phase correction method, Doppler centroid tracking (DCT) method has clear principle and small computation amount. However, the performance of DCT is normally unsatisfactory when the target has strong scattering centers. Based on...
This paper presents a method of deception jamming to ISAR imaging system (Chen and Andrews, 1980). By series of simulations we will prove that when real target and fake target are moving in different trace the jamming is available and practical.
When multiple moving targets are close in the same radar beam and can not be separated in range, the conventional ISAR imaging motion compensation algorithms can not get clear images. However, these targets have different velocities and directions, so their Doppler histories of returned signals are different. In a short time, these Doppler histories can be treated as approximately linearly changing...
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