用于汽车成像雷达干扰抑制的波束时间跳变调制

2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS) Pub Date : 2021-11-01 DOI:10.1109/comcas52219.2021.9629028

Arkady Molev-Shteiman, Xiao-Feng Qi

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引用次数: 0

摘要

我们提出了一种适用于汽车成像雷达的波束时间跳变调制，即使在模拟前端非线性失真存在的情况下也不受车间干扰的影响。其他方案，如直接序列扩频调制或跳频也减轻了由于雷达信号之间的正交车内干扰。然而，非线性失真打破了这种正交性。因此，对雷达模拟前端线性度的要求非常严格，这大大增加了汽车雷达的成本和功耗。相比之下，波束时间跳变调制在很大程度上保持雷达信号的正交性，即使存在非线性失真。它软化了对模拟前端线性度的要求，可以显著降低汽车雷达的成本和功耗。

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Beam-Time Hopping modulation for automotive imaging radars interference mitigation

We propose beam-time hopping modulation for automotive imaging radar that is immune to inter-car interference even in presence of analog frontend non-linear distortion. Other schemes such as direct sequence spread spectrum modulation or frequency hopping also mitigate inter-car interference due to orthogonality between radars signals. However non-linear distortion breaks this orthogonality. As a result, the requirements to radar analog frontend linearity are very strict which significantly increase cost and power consumption of automotive radar. In contrast, the beam-time hopping modulation maintains radars signals orthogonality to a large degree, even in the presence of non-linear distortion. It softens requirements on analog frontend linearity and may significantly reduce car radar cost and power consumption.

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来源期刊

2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)

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