An rf-modulated pulse train from a passively Q-switched Nd:YAG laser has been generated using an extra-cavity acousto-optic modulator. The rf modulation reproduces the spectral quality of the local oscillator. It leads to a high pulse-to-pulse phase coherence, i.e., phase memory, over thousands of pulses. The potentialities of this transmitter for lidar-radar are demonstrated by performing Dopp...

A 90-98 GHz transmitter frontend fabricated in TSMC 65-nm bulk CMOS, capable of concurrent radar-communications applications is presented. proposed that can be used for phase-coded frequency-modulated continuous wave (PC-FMCW) radar as well data transmission and interference mitigation. The architecture based on an 8-12 IF ×8 frequency multiplication a 10-11 local oscillator (LO). Vector...

FEPMR is standing for Front-End and Doppler Processing for Monopulse Doppler Radar. It is a PCB at the frontier between the RF and the Digital Circuits for the radar AXIR. There are four channels, corresponding to the four squinted beams of the antenna ( Right, Left, Up and Down ). Each beam channel is processed in phase (I) and quadrature ( Q) real baseband signals. The eight video analog sign...

This paper is based on measurements of Polar Mesosphere Summer Echoes (PMSE) with the 52 MHz radar ESRAD, located near Kiruna, in Northern Sweden, during the summers of 1997–2009. Here, a new independent calibration method allowing estimation of possible changes in antenna feed losses and transmitter output is described and implemented for accurate calculation of year-to-year variations of PMSE...

This paper describes the design and development of a ground based Frequency Modulated Continuous Wave (FMCW) radar system in Multimedia Univeristy (MMU), Malaysia. In this project, a ground-based fully polarometric, C-band, high bandwidth linear FM-CW and real time imaging radar system is to be designed and constructed. The system should have the capability to measure the complex scattering mat...