可观测性分析是无源定位与跟踪系统的前提和基础，只有满足可观测条件才能对系统进行正确求解。

Observability analysis is the basic and prime task in passive localization and tracking system, for only when the system is observable, it can be determined with unique and definite solution.

youdao

采用新的思路推导了一种TOA测量方程的线性化方程，分析了测量TOA和DOA单站无源定位的可观测条件。

A linearization equation is deduced through a new idea, and the observability (conditions) (of) (SOPLAT) using TOA and DOA measurements are obtained.

youdao

首先分析了系统的观测性，得出了系统可观测的两个必要条件。

System observability is examined and two necessary conditions for the system to be observable are obtained.

youdao