| 摘要 |
A novel radio receiver capable of simultaneously and instantaneously determining the frequency and azimuthal and elevational position of many radio signal sources is disclosed. The invention makes use of an antenna array and associated beamforming networks capable of producing an omnidirectional reference signal, and a directional signal in which amplitude depends upon the relative elevational position of the radio frequency source and complex phase depends upon the relative azimuthal position of a radio frequency source. The use of a two-dimensional compressive receiver in one embodiment provides a way for instantaneously and reliably producing the Fourier transform of these signals, allowing accurate and continuous measurement of phase and amplitude difference. The antenna geometries disclosed additionally provide such signals for a wide input bandwidth.
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