In the last years, in order to fit the requirements of automotive radar application under the multi-target conditions, several proposals about Continuous Waveform (CW)have been developed. The transmit signal with Multiple Frequency Shift Keying (MFSK) technology was developed to analyze the target information in range domain and Doppler frequency domain simultaneously, but the MFSK waveform has lower estimation accuracy in phase measuring. A higher accuracy signal type is the chirp sequence waveform of monopulse radar, which is based on two-dimension independent frequency measuring. It can also get the range and velocity information, but might lead to ambiguities in Doppler domain. To avoid the Doppler ambiguity, a method is proposed in this paper, which uses the modified chirp sequence waveform. The carrier frequencies of the modified chirp sequence are different, which causes the Doppler frequency offset. Doppler ambiguities have no influence on the Doppler frequency offset and the speed of targets can be derived from carrier frequency offset and Doppler frequency offset. Thus, the modified chirp sequence avoids the ambiguities in velocity and guarantees the measurement accuracy even in multi-target conditions. It has advantages in the automotive radar applications.


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    Titel :

    A Modified Chirp Sequence Design for Monopulse Automotive Radar


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Wang, Fang (Autor:in) / Bai, Jie (Autor:in) / Huang, Libo (Autor:in) / Chen, Tao (Autor:in)

    Kongress:

    Intelligent and Connected Vehicles Symposium ; 2017



    Erscheinungsdatum :

    2017-09-23




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    A Modified Chirp Sequence Design for Monopulse Automotive Radar

    Chen, Tao / Bai, Jie / Wang, Fang et al. | British Library Conference Proceedings | 2017


    Cradar-an open-loop extended-monopulse automotive radar

    Grimes, D.M. / Grimes, C.A. | Tema Archiv | 1989


    New chirp sequence radar waveform

    Kronauge, Matthias / Rohling, Hermann | IEEE | 2014


    Monopulse secondary surveillance radar

    Stevens, M.C. | Tema Archiv | 1987


    Monopulse versus Multilateration Technique for Azimuth Measurement in Automotive Radar Networks

    Oprisan, D. / Folster, F. / Rohling, H. et al. | British Library Conference Proceedings | 1998