Automotive anti-collision radar system and multi-target identification algorithm utilizing same

Abstract

The invention discloses an automotive anti-collision radar system and a multi-target identification algorithm utilizing same. The automotive anti-collision radar system comprises the components of a modulating circuit, a modulating mode controller, an FMCW / FSK double-function radar, a radar system switching unit, an RF front-end, an intermediate frequency processing module and a data processing module. The multi-target identification algorithm comprises six steps. The automotive anti-collision radar system and the multi-target identification algorithm are technologically advantageous in that on condition that calculation amount and hardware cost are not increased, clear multi-target detection matching can be realized in comparing the automotive anti-collision radar system with a system in which FM continuous wave radar modulation is singly used; and parameters of targets in a stationary state and a moving state can be simultaneously measured in comparing the automotive anti-collision radar system with the system in which frequency shift keying modulation is singly used, so that the radar system can simultaneously and effectively identify and detect one or a plurality of targets in the stationary state and the moving state.

Description

technical field [0001] The invention relates to the technical field of automobile anti-collision radar, in particular to an automobile anti-collision radar system and a multi-target recognition algorithm using the same. Background technique [0002] There are disadvantages that it is easy to produce ambiguous difference frequency matching and it is difficult to detect multiple targets at the same time. In the existing automotive radar measurement systems at home and abroad, frequency modulated continuous wave (FMCW) radar is often used as the front-end detection sensor. FMCW radar has the advantages of high sensitivity and high range resolution, but has the disadvantages that it is easy to produce difference frequency matching ambiguity, and it is difficult to detect multiple targets at the same time. [0003] The commonly used software solution is to perform spectrum matching processing on the obtained intermediate frequency signal by calculation method at the receiving end...

AI Technical Summary

Problems solved by technology

[0004] The commonly used hardware solution is to use multiple same-system or different-system radars in the same detection range at the same time. This method will inevitably increase the cost of hardware and cause interference problems.

[0005] Although frequency-shift keying (FSK) radar can measure multiple moving targets at the same time, it cannot detect multiple targets when they are relatively stationary, and its detection accuracy is not high. When used alone, it needs to rely on post-signal processing

[0006] With the development of radar technology in recent years, although many radars have both FSK and FMCW modulation modes, only one modulation mode can be used at the same time

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