MIMO Radar Virtual Channel Multiplication via Phase Rotation

The patent creates virtual channels by copying and modulating signals through BPSK modulators and phase rotators. Each physical channel can be configured to represent multiple virtual channels through signal processing, effectively multiplying the number of detectable channels without adding physical components. This allows the system to achieve higher angular resolution through virtual channel multiplication rather than physical channel expansion.

The patent utilizes parameter changes through BPSK modulation and phase rotation to create distinct virtual channels. By varying the modulation state and phase angle of signals passing through different paths, the system creates orthogonally separable channels. This parameter-based differentiation allows multiple virtual channels to coexist through a limited number of physical channels, resolving the contradiction between channel quantity and system complexity.

The patent merges multiple virtual channels into a single physical channel infrastructure by using signal processing techniques. Multiple BPSK modulated signals and phase-rotated signals are combined and transmitted through a limited number of physical channels, with the receiver distinguishing between virtual channels through correlation processing. This merging approach maintains high angular resolution while avoiding the power consumption penalty of multiple independent physical transmitters.

Instead of powering multiple separate physical channels, the patent creates multiple virtual channels by copying and modulating signals through electronic processing stages (BPSK modulators, phase rotators). The additional channels are realized through signal replication and transformation rather than physical duplication, thereby achieving high resolution without proportional increases in power consumption.

The patent merges multiple virtual channels into a single physical channel infrastructure, reducing the total number of active physical components that generate heat. By using signal processing to differentiate channels rather than physical separation, the system achieves high angular resolution with fewer power amplifiers and transmission lines, thereby reducing thermal accumulation in the radar system.

The patent creates additional channels through signal copying and modulation rather than physical channel duplication. This approach avoids the thermal effects associated with multiple independent power amplifiers and transmission paths, as the virtual channels are created through electronic signal processing with minimal additional thermal generation.