W-band High Range Resolution Altimeter Developments in Arralis
In this paper, the W-band FMCW altimeter radar developed by Arralis is described. Arralis comes with the solution of both integrated circuits and modules used in a transmitter/receiver chain designed for W-band. This provides a complete FMCW radar system working in the frequency range of 92-96 GHz with the aid of commercial off the shelf analogue to digital converters and Digital Signal Processing (DSP) evaluation boards. Thus, by achieving a 4 GHz bandwidth at the centre of 94 GHz, a theoretical range resolution of 3.75 cm is achieved, which is then degraded by the windowing function factor during converting the signal into the frequency domain. The FMCW radar system uses a triangular waveform by default, which then can be converted to other waveforms as well.
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