The idea of embedded synchronic signal is proposed, which USES the synchronic signal for locating the watermark location.
同时引入了同步信号的思想，利用同步信号和水印序列号定位水印的嵌入位置。
2
An algorithm used trigonometry to passively locating a moving emitter with direction of arrival (DOA) and time difference of arrival (TDOA) of the emitter signal is given.
Last, after analyzing signal characteristics and locating performance of analog TV, its detecting characteristics and locating performance are compared with those of HDTV signal.