Derivation of rate of arterio - arterial anastomotic transfusion between monochorionic twin fetuses by Doppler waveform analysis[J].Placenta, 2004, 25:664.Denbow ML, Taylor M, Cox P and Fisk NM. Derivation of rate of arterio-arterial anastomotic transfusion between monochorionic twin fetuses by ...
To determine the effect of the radar operating frequency, f, on the observed Doppler shift, consider a simplified model of the ionosphere which neglects the effect of the Earth’s magnetic field (justified by the derivation above). In such a model, the refractive index for the ionosphere beco...
CASPubMedGoogle Scholar Bartels E, Flugel KA. Quantitative measurements of blood flow velocity in basal cerebral arteries with transcranial duplex colorflow imaging. A comparative study with conventional transcranial Doppler sonography. J Neuroimag 1994;4:77–81. CASGoogle Scholar Gerriets T, Seidel G,...
4D mm wave radar; radar odometry; ego-velocity estimation; gyroscope1. Introduction SLAM is a core technology in autonomous driving and robotics. Currently, most platforms use LiDAR or cameras as their primary sensors and related SLAM algorithms have demonstrated high performance [1,2,3,4,5]. ...
sensors Technical Note Inertial Navigation System/Doppler Velocity Log (INS/DVL) Fusion with Partial DVL Measurements Asaf Tal 1,2,*, Itzik Klein 2 and Reuven Katz 1 1 Faculty of Mechanical Engineering, Technion-Israel Institute of Technology, Haifa 3200003, Israel; reuvenk@technion.ac.il 2 ...
4D mm wave radar; radar odometry; ego-velocity estimation; gyroscope1. Introduction SLAM is a core technology in autonomous driving and robotics. Currently, most platforms use LiDAR or cameras as their primary sensors and related SLAM algorithms have demonstrated high performance [1,2,3,4,5]. ...
Keywords: Doppler velocity log/inertial navigation system (DVL/INS) fusion; loosely coupled; tightly coupled; autonomous underwater vehicle six degrees of freedom (AUV 6DOF) simulation; partial measurement1. Introduction Underwater operations attract great attention for environmental matters and potential ...
In this experiment, we take the first chirp signal of each frame to obtain the velocity dimension (also called slow time dimension) data. At this time, because the time is very short, it can be considered that the distance of the target has basically not changed (even for a moving target...
The derivation of this method is provided below. The velocity of the target with velocity ambiguity can be expressed as 𝑣0=𝑞̃1𝑣amb+𝑣rem, 𝑣rem∈[−𝑣amb/2,𝑣amb/2)v0=q˜1vamb+vrem, vrem∈[−vamb/2,vamb/2) (13) where 𝑣amb=𝑓𝑟𝜆/2vamb=frλ...
Doppler shifts in the carrier signal have long been used in satellite-based geolocalization, where—due to the vast velocity of satellite platforms—Doppler has a distinct value dominated by the deterministic satellite movement, which is much larger than the unknown variations caused by IoT device ...