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 safety; radar interference; radar receivers; road vehicle radar; radar detection; interference suppression

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

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