Radar Test System Research Articles

Simple‐structure and cost‐effective FMCW radar test system using a PLL‐Gunn oscillator and fundamental mixer in the E‐band

The authors explain the development of a cost-effective frequency-modulated continuous wave (FMCW) radar test system in the E-band with a simple-structure, and demonstrate it for an automotive application using an FMCW radar chipset evaluation board and an FMCW radar. The system consists of a down-converter, based on a fundamental mixer with a phase-locked loop-Gunn oscillator, and a mixed domain oscilloscope or a conventional digital oscilloscope. It is able to evaluate an FMCW signal in the time domain, such as the chirp rate, chirp length, chirp width, linearity, and the relative power level.

Research on Cognitive Marine Radar Based on LFM Waveform Control.

In this paper, the method of applying cognitive radar technology to marine radar is studied, and the cognitive marine radar structure and transmitted signal model with three control parameters are constructed. The selection method of waveform control parameters, which is based on the target spatial distribution and the reference target detection effect with the minimum emission energy as the criterion, is given. The transmission signal control selection method given in this paper can flexibly realize different emission signal groups of groups by independently setting the values m, n and p of three control parameters. It does not require radar hardware circuit reconstruction to meet the radar waveform changes. This is more convenient for the technical realization of cognitive marine radar. According to the method of this paper, a cognitive marine radar test system was constructed. The experimental results show that the proposed radar could reduce the emission energy by 15.9 dB compared with the traditional fixed-parameter pulse compression marine radar under the experimental conditions.