![]() Safety from the absence of the pulse radiation with a high peak power.Signal processing after mixing is performed at a low frequency range, considerably simplifying the realization of the processing circuits.Very high accuracy of range measurement.Ability to measure simultaneously the target range and its relative velocity.Is comparable to the transmitted wavelength) Ability to measure very small ranges to the target (the.In FMCW radar are measured the differences in phase or frequency between the actually transmitted and the received signal instead. In pulse radar, however, the runtime must be measured directly. When an echo signal is received, that change of frequency gets a delay In this method, a signal is transmitted, which increases or decreases in the frequency periodically. Such a time reference for measuring the distance of stationary objects,īut can be generated using of frequency modulation of the transmitted signal. To allow the system to time accurately the transmit and receive cycle and to convert this into range. ![]() That it cannot determine target range because it lacks the timing mark necessary Simple continuous wave radar devices without frequency modulation have the disadvantage Possibilities of Radar measurements through runtime measurements are only technically possible with these changes in the frequency (or phase). That is, the transmission signal is modulated in frequency (or in phase). In contrast to this CW radar FMCW radar can change its operating frequency during the measurement: Is a special type of radar sensor which radiates continuous transmission power like a simple continuous wave radar ( Frequency- Modulated Continuous Wave radar = FMCW radar) Figure 1: Ranging with an FMCW system Frequency-Modulated Continuous-Wave Radar (FMCW Radar)
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