h i,j)(X k ) is also the spread reflection form of target and is defined for each cell by h i, j X k = Δ x Δ y I k 2 π ∑ 2 exp - x k - i Δ x 2 + y k - i Δ y 2 2 ∑ 2 (4).
Opinions stipulate total trial sample sizes, often stratified by age cohort to ensure there is a good reflection of the target population in the trial.
However, if reverberating events are appearing in the same depth and location as the primary reflection of a target of interest, this may be considered to degrade the ultrasound image quality.
Interestingly there was no association between socioeconomic status and care-seeking, which may be a reflection of successful targeting of assistance to the most vulnerable and/or the availability of low cost services in the public and NGO/charity sectors.
The factor 5 in (28) shows the number of unknown parameters including range, angle, Doppler frequency, and the complex reflection coefficients of targets.
Also, α r,a,d for r = 1, ⋯, N R, a = 1, ⋯, N A, and d = 1, ⋯, N D denote the return complex reflection coefficients of targets corresponding to the radar cross-section.
The reconstruction error (( {leftVert widehat{boldsymbol{s}}-boldsymbol{s}rightVert}_2^2/{leftVert boldsymbol{s}rightVert}_2^2 )) for all cases versus the number of measurements, SNRs, and the number of pulses are shown in Fig. 2a c, respectively, where ŝ and s are the estimated and true vectors containing the return complex reflection coefficients of targets, respectively.
The subspace decomposition method, presented in [25, 26], utilizes not only the approximately identical wall scattering characteristics across the array elements but also the higher strength of the wall reflections compared to that of target reflections.
Additionally, due to reflections of the target signal impinging from directions other than the steering direction, significant signal leakage into the noise reference needs to be expected.
Face and voice biometrics are used to log-in to the app, doing away with a combination of pincodes and passwords — a reflection of Atom's target audience of millennials.
