Discussion
What does an adaptive array do that a fixed array cannot?
Answer: B
An adaptive array measures the signals arriving at its elements and computes weights that suppress interference while preserving the wanted direction, updating continuously as the environment changes. Nothing about it increases available power or element bandwidth, and it certainly requires weight control on each element. The gain over a fixed array appears only when there is interference to reject, which is why adaptive systems are specified by their interference environment.
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