Novel Pulse-Sequences Design Enables Multi-User Collision-Avoidance Vehicular Radar

Novel Pulse-Sequences Design Enables Multi-User Collision-Avoidance Vehicular Radar

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Our CPSR technique utilizes a novel randomized pulse train composed of a large number of successive pulse sequences randomly selected from a given set interspersed with random gaps instead of a simple train of periodic or staggered pulses. The high performance and interference rejection features of the CPSR technique come from optimum temporal properties of the chosen sequences, high statistical unpredictability of the trains of pulse sequences, and the large number of pulses that are processed in the radar receiver in order to obtain decisions on obstacle presence and range. Sequence trains with thousands of pulses are used thereby increasing the power available for detection and, in comparison with simple pulsed radar systems, improving the system performance with respect to noise and interference rejection. The key operational features of Chaotic Pulse-Sequence Radar can be summarized as follows: Non-coherent radar technology for low-cost, high-volume automotive safety application . Use of specially-engineered randomized pulse sequence trains for modulating pulsed radars . Optimum temporal properties of the sequences provide for high and predictable immunity to interference from similar and dissimilar radar systems or other interferers in uncontrolled multi-user environments . High speed but simple integrating processes in the radar receiver that are tolerant to pulse distortion. The final system includes additional components such as efficient discrimination, ranging of obstacles in road clutter, and temporal tracking.

Inspec keywords: road vehicle radar; radar interference; radar detection; radar receivers; interference suppression; road safety

Other keywords: pulsed radar systems; interference rejection features; low-cost high-volume automotive safety application; successive pulse train sequence design; road clutter; randomized pulse train; sequence trains; radar detection; multiuser collision-avoidance vehicular radar; temporal tracking; radar receiver; radar systems; staggered pulses; optimum temporal property; uncontrolled multiuser environments; CPSR technique; noncoherent radar technology; modulating pulsed radars; chaotic pulse-sequence radar

Subjects: Electromagnetic compatibility and interference; Radar equipment, systems and applications

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