Signal processing method and device

The invention provides a signal processing method and device, which can ensure the orthogonality between detection signals transmitted by different transmitting antennas, thereby improving the angular resolution of target detection. The method comprises the following steps of: determining and transmitting a first sequence set, wherein the first sequence set comprises at least one first sequence, and the at least one first sequence is an orthogonal sequence after fast time dimension coding and slow time dimension coding are used; and then, receiving reflected signals of the first sequence set, and determining one or more of the distance, the speed and the orientation of a detection target according to the reflected signals. 本申请提供一种信号处理方法及装置，能够确保不同发射天线发射的探测信号之间的正交性，从而提高目标探测的角度分辨率。该方法包括：确定并发送第一序列集合。其中，第一序列集合包括至少一个第一序列，至少一个第一序列为使用快时间维编码和慢时间维编码后的正交序列。然后，接收第一序列集合的反射信号，并根据反射信号确定探测目标的距离、速度、方位中的一项或多项。