时延估计已发展多年,但目前大多数模型仍建立在单目标假设下。实际情况中,观察域内常存在多个目标,要求同时对它们定位,这就提出了多目标时延估计问题。与最大似然多目标时延估计方法相比,自适应多目标时延估计器具有易实现,且适应变化环境的优点,是一种较有应用前途的时延估计方法。 Time delay estimation has been developed for many years, but most of the models are still based on the single-objective assumption. In practice, multiple targets often exist in the observing domain and they are required to be located at the same time. Therefore, the multi-target delay estimation problem is proposed. Compared with the maximum likelihood multiple target delay estimation method, adaptive multi-target time delay estimator is easy to implement and adapt to the changing environment. It is a promising method for time delay estimation.