| 摘要 |
Embodiments of the present invention provide retrodirective noise-correlating radar that include: (1) a transmit antenna array that quiescently transmits random noise; (2) a receive antenna array, in a desired spatial relationship with the transmit antenna array, for collecting the reflected noise from a target; and (3) RF electronic components interconnecting antenna-element pairs between the receive and transmit arrays. In one group of embodiments, the radar automatically transforms the broad pattern from each element of the array (when transmitting or receiving random noise), to a narrow pattern characteristic of the entire array. In a second group of embodiments, a presence of a target and its range are determined quickly by a quasi-coherent build-up of signal in the time or frequency domains. In third group of embodiments a target angle and velocity vector are determined by cross correlation between two or more electronic channels connecting the transmit and receive arrays.
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