Generating radar signals is one of the most challenging tasks for a signal generator. The increasing complexity of radar systems, growing use of complex modulation techniques such as OFDM or UWB, and the signal quality requirements for a successful test impose severe constraints on the stimulus equipment used in radar testing. Emulating multi-antenna radar systems based on phased-array antennas or more recently, MIMO architectures, makes it necessary to generate multiple signals with tightly controlled timing and phase alignments.
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