| 摘要 |
A system and method of tracking ambient signals, detecting or receiving desired signals, and suppressing undesired signals. An array of sensors receives ambient signals and generates N channels of data. A transformation device accepts the data from the array and generates N' channels of data. An adaptive processor accepts the N' channels of data from the output of the transformation device and processes the N' channels of data to update the settings of the transformation device, such that only N' degrees of freedom are adaptively manipulated by the adaptive processor at an instant, the manipulation being done in a manner that instantaneously senses changes in signal environment and adjusts the settings of the transformation device in a closed-loop. The adaptive processor optionally combines these N' channels to produce system output beam(s) that remove residual interference present out the output of the transformation device. Over time, the adaptive processor controls all N degrees of freedom adaptively, thus nulling and tracking performance is then limited by the N degrees of freedom and not the N' degrees of freedom that are actually used adaptively at any instant.
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