New Algorithm for Multiple Object Detection in FM-CW Radar

Miyahara, Shunji

doi:10.4271/2004-01-0177

Cited by 23 publications

(22 citation statements)

References 4 publications

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“…In a multi-target situation, FMCW radar with unmodulated CW presents another problem. The procedure to identify correct combinations of beat frequencies is complex because all possible case should be combined by several d f [3].…”

Section: The Proposed Algorithmmentioning

confidence: 99%

“…FMCW is an effective method, but it possesses the following ambiguities in multi-target situations [3]: separation of ranges and velocities for each target with wide relative velocity and range identification of the correct combinations of beat frequencies for multiple targets These problems bring out so-called 'ghost targets' and 'missing targets' in range-velocity processing. To resolve these limitations, several methods have been proposed, for example, such as FMCW waveform with unmodulated continuous wave between up-and down-chirps [3].…”

Section: Introductionmentioning

confidence: 99%

“…To resolve these limitations, several methods have been proposed, for example, such as FMCW waveform with unmodulated continuous wave between up-and down-chirps [3]. However, the procedure of pairing beat frequencies of multiple targets is extremely complex [3].…”

Section: Introductionmentioning

confidence: 99%

“…Signals reflected from targets C and D also fell on the same down-beat frequency 3 bd f . In these cases, the pairs cannot be identified, as shown in Figure 9(a) and (b).…”

mentioning

confidence: 95%

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A meothod for multi-target range and velocity detection in automotive FMCW radar

Hyun

Lee

2009

2009 12th International IEEE Conference on Intelligent Transportation Systems

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FMCW(Frequency Modulation Continuous Wave) radar has many useful applications but a serious problems can occur in multi-target situations. Range-velocity processing should suppress so-called ghost targets and detect missing targets presented by beat frequency shift with Doppler frequency. In this paper, a new method is proposed for effective identification of the correct pairs of beat frequencies received from real targets.

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Section: The Proposed Algorithmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Signals reflected from targets C and D also fell on the same down-beat frequency 3 bd f . In these cases, the pairs cannot be identified, as shown in Figure 9(a) and (b).…”

mentioning

confidence: 95%

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A meothod for multi-target range and velocity detection in automotive FMCW radar

Hyun

Lee

2009

2009 12th International IEEE Conference on Intelligent Transportation Systems

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“…But when there are multiple targets, it is difficult to obtain the accurate parameters of the targets because of the false targets. To solve such problems, [2] presented a changeable periods frequency modulated continuous wave radar signal, while [3] proposed a changeable slope continuous wave radar signal .And [4]- [6] also proposed some other waveforms. These methods can solve the multi-target detection problem in eliminating false targets, but they have the problem of large amount of computation and complex algorithm, which will lead to increased cost and poorer performance of the vehicle borne radar.…”

Section: Introductionmentioning

confidence: 99%

An improved waveform for multi-target detection in FMCW vehicle radar

Li¹,

Che²,

Shen³

et al. 2016

Proceedings of the 2016 7th International Conference on Mechatronics, Control and Materials (ICMCM 2016)

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Abstract. Frequency Modulation Continuous Wave (FMCW) radar has been widely used in vehicle safety systems now. Many kinds of waveform have been designed to solve the coupling of distance and velocity in multi-target detection. This paper proposes a novel FMCW waveform which contains three sections with same duration in each period. Two sections are up ramps with different slopes and one is down ramp. Two groups of N*N values of the distance and velocity can be extracted by implementing N-point FFT towards one up ramp and down ramp signal. The distance and velocity in the two groups are the same for the real targets, however, quite different for the ghost targets. Compared with traditional waveforms, the proposed waveform in our work has simpler algorithm and less computation, which has been validated by simulations.

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