Besides the well known microwave radar systems mainly used in navigation, surveillance, and control applications, High-Frequency (HF) radars gain increased attention during the last decades. These HF radars are operated in the 3-30 MHz frequency range and due to ground-wave or sky-wave propagation provide over-the-horizon (OTH) capabilities. Many of these OTH radars apply frequency modulated co...

In a context of mobile environment mapping, a vehicle-based radar system, K2Pi, has been developed. A mapping of the environment is carried out from the radar datasets. Given the specificities of radar maps, the main problem at this stage is to find a method to georeference these maps. This article proposes three radar map georeferencing methods. The first method is a typical manual selection o...

The paper proposes a unsupervised method for detecting the three stages of sleep—wake, rapid eye movement (REM) sleep, and non-REM sleep—using biosignals obtained from 61 GHz single frequency modulated continuous wave (FMCW) radar. To detect subject’s sleep based on non-learning techniques, breathing information characteristic each stage was extracted radar signals subject acquired in state use...

Radar technology was designed to increase public safety on sea and in the air. Today radars are used in many fields of application, such as airdefense, air-traffic-control, zone protection (in military bases, airports, industry), people search and others. Classic pulse radars are often being replaced by continuous wave radars. Unique features of continuous wave radars, such as the lack of ambig...

Co-located MIMO is used to enlarge the antenna aperture virtually and increase angular resolution. This paper shows FMCW radar using VAA. Polyphase codes are designed for modulating successive chirps of transmitting signals. The optimized have low cross-correlations regardless Doppler filter mismatch. Compared with orthogonal codes, show robust performance mismatch lower angle estimation errors...

The designing of a continuous wave radar radar (CW) intended for remote counting of traf fic (remote traffic counter) and speed measurement of transport means with the help of high speed trajectories in the radar beam for long range transferring of these data is considered. It was experimen tally shown that, for recording the current number of transport means and measuring the speed of each of ...

In order to reduce the probability of automobile safety incidents, in-vehicle occupant monitoring is indispensable. However, using frequency-modulated continuous wave (FMCW) radar can be challenging due interference from passengers’ posture, movement, and presence multiple people. This paper proposes an improved method for generating point clouds FMCW radar. The approach involves cloud clusteri...