The principle of extended TDOA histogram method is discussed. An application of multistation TDOA position location based on extended TDOA histogram method is illustrated. A comparison between extended TDOA histogram method and traditional TDOA position location signal processing is listed. A way to approach the real time processing is pointed out.%论述了扩展时差直方图的原理和基本方法，以三站时差定位系统为例，介绍了基于参数分割的扩展时差直方图方法的应用，并与传统的时差定位系统信号处理方法进行了比较，指出扩展时差直方图方法实现实时处理的有效途径。
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