Fig. 1: Conceptual diagram to illustrate the space-time-coding (STC)-metasurface-based radar system.
From: Simplified radar architecture based on information metasurface
One metasurface is responsible for generating the radio-frequency (RF) chirp signals and transmitting them to targets, while the other STC metasurface receives the echo signals and performs the RF dechirp processing directly on the RF level. The abbreviation FPGA is for field programmable gate array.
