In the adjusted model, the echo-intervention was associated with a 3.1 mm Hg decline in SBP (95% CI, −5.3 to −0.8) and a 1.9 mm Hg decline in DBP (95% CI, −3.5 to −0.4).
In this paper, the micro-spin model is modeled, and the echo of micro-spin model scattering point is processed respectively by short-time Fourier transform (STFT), Wigner-Vile Distribution (WVD), and pseudo-Wigner-Vile Distribution (PWV), and the micro-Doppler curve is derived.
Based on the analysis of the target echo model, the target echo signal received by the receiver can be obtained by s(t)={A}_{mathrm{s}} exp left[jleft({omega}_{mathrm{c}}+{omega}_{mathrm{d}}right)left t-frac{2R t)}{c}right)right] (8).
In this paper, the micro-spin model is modeled, and the echo is processed by short-time Fourier transform (STFT), Wigner-Vile Distribution (WVD), and pseudo-Wigner-Vile Distribution (PWV), and the micro-Doppler curve is derived.
In Section 2, the geometry of the bistatic spaceborne/stratospheric SAR with a fixed receiver is given, and the signal model of the echo data with synchronization errors is derived.
LiDAR vegetation measures can be represented using two different data models, the echo-based and the CHM raster model.
C. Y. Wang et al. [15] model the radar echoes for radar HRRP recognition by T-mixture model.
In [9], the echo model of SAR imagery with multiple ships was converted into a CS model with orthogonal basis and used the CS-based method to achieve higher azimuth resolution.
Assuming negligible acceleration of the reflector, the echo model from a point reflector is given as the delayed and scaled replica of the transmitted pulse.
Equation (10) is the echo model of the micro spin target.
Because the echo model is a kind of output, it forms a theoretical basis for all SAR imaging algorithms.
