A Doppler radar is a specialized radar that makes use of the Doppler effect to estimate targets velocity. It does this by beaming a microwave signal towards a desired target and listening for its reflection, then analyzing how the frequency of the returned signal has been altered by the object’s motion. This variation gives direct and highly accurate measurements of the radial component of a ta...

against the range-dependent accuracy of the tracking radar measurements including range, elevation and bearing angles, a new hybrid adaptive kalman filter is proposed to enhance the performance of the radar aided strapdown inertial navigation system (ins/radar). this filter involves the concept of residual-based adaptive estimation and adaptive fading kalman filter and tunes dynamically the fil...

Echocardiography is the most commonly used diagnostic method for assessing left ventricular (LV) function in clinical cardiology. However, echocardiographic measurements are subjective, semiquantitative, and relatively insensitive when detecting subtle abnormalities in contractility. Furthermore, early detection of either global or regional LV dysfunction may be crucial to patient care by influ...

An automated tracking algorithm for doppler radar storms is presented. Potential storms in Doppler radar images are hypothesized as regions of high water density (high intensity in the radar images) using a merge-and-split region growing algorithm. Potential storms are veriied by a relaxation labelling scheme that attempts to nds the best tracks based on spatio-temporal storm consistency. Tempo...

The aim of this paper is to discuss the Quasi Doppler or Pseudo Doppler bearing estimation method and show how contemporary digital signal processing and some minimal a priori knowledge of the signal can improve the method and make it relevant even today for low complexity localization purposes. The basic idea is that nonuniform switching of antennas on the transmitter side, and careful examina...

A linear array radar can be operated as a multiple-input multiple-output (MIMO) radar or a directed beam radar. A MIMO radar transmits orthogonal waveforms on each array element, which can achieve virtual aperture extension. Compared to a directed beam radar, MIMO radar requires longer integration times to maintain the same energy on target. This results in narrower Doppler bins but increased r...

The superiority of multiple-input multiple-output (MIMO) radars over conventional radars has been recently shown in many aspects. These radars consist of many transmitters and receivers located far from each other. In this scenario, the MIMO radar is able to observe the targets from different directions. One of the advantages of these radars is exploitation of Doppler frequencies from different...

Tracking problem in spherical coordinates with range rate (Doppler) measurements, which would have errors correlated to the range measurement errors, is investigated in this paper. The converted Doppler measurements, constructed by the product of the Doppler measurements and range measurements, are used to replace the original Doppler measurements. A de-noising method based on an unbiased Kalma...