Yong-Liang Wang

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For along-track multichannel synthetic aperture radar, this paper proposes a novel ground moving target signal model in the high-resolution complex image domain. Based on the range–Doppler imaging of static scene, the 2-D complex response of an isolated rectilinearly moving target is derived via the stationary phase principle (SPP) approximations. It is(More)
Based on a parametric model and some optimum methods, it has been previously proved that parametric velocity synthetic aperture radar (VSAR) may improve the performances of moving target detection and parameter estimation simultaneously. In this paper, multilook processing is studied for parametric VSAR. At first, statistical signal models are established(More)
Velocity synthetic aperture radar (VSAR) is equipped with a linear array to receive the echoes from a radar illuminating area via multiple channels, each of which can reconstruct a reflectivity image for the same stationary scene. Based on analysis of pixel vector sampled among multi-images, VSAR may effectively suppress the strong ground clutter and(More)
Space-time adaptive processing (STAP) has been widely discussed for airborne radar systems to improve the system performance of detecting targets. This is especially for airborne early warning (AEW) radar, which should find the long-range and small radar cross section (RCS) targets such as the stealth aircrafts and missiles. However, in existing airborne(More)
OBJECTIVES To evaluate the effect of urapidil on myocardial perfusion, and ventricular function in patients with ST-elevation acute coronary syndrome (ACS) treated with primary percutaneous coronary intervention (PCI). METHODS Fifty-four patients were randomized into urapidil (12.5 mg, ic, n=27) or control group. Infarct related artery (IRA) was targeted(More)
Besides noise and potential targets, there usually exists jamming, which can significantly degrade detection performance of a detector. In this letter, we analyze the statistical performance of the adaptive orthogonal rejection detector (AORD), recently proposed for the case of completely unknown jamming. We derive closed-form expressions for the(More)
In this paper, a novel method based on Toeplitz decorrelation is proposed to estimate DOAs (direction of arrivals) of the coherent sources. Using the eigenvector corresponding to the largest eigenvalue obtained from the received data covariance matrix, the presented method constructs a new Toeplitz matrix whose rank is equal to the number of sources. The(More)
BACKGROUND The association between increased serum uric acid (SUA) levels and cardiovascular risk has been debated for decades. Several large studies have provided conflicting results regarding the clinical significance of elevated SUA levels in cardiovascular disease (CVD) or cerebrovascular disease. The aim of this study was to investigate the(More)
In this paper, we consider the problem of distributed target detection with subspace signal mismatch. Precisely, the echoes reflected by the distributed target all come from the same direction, and the signal steering vector is assumed to lie in a preassigned subspace. However, the actual signal steering vector does not completely belong to the presumed(More)
Channel mismatch, including amplitude and phase mismatch, has severely affected the performance of space-time adaptive processing (STAP). In order to ascertain the specification of the effects on STAP, theory analysis of relation between clutter covariance matrix (CCM) with and without channel mismatch is done based on the model provided by literature, and(More)