That noise fm signal emalates tv sound fm signal researchs above two question about correlative detection and restrainning sidelobe . the research ' s result is compared with linear fm emulational research ' s 用噪声调频信号对电视伴音调频信号进行仿真研究上述提到的相关检测和旁瓣抑制问题,并与线性调频信号仿真研究相比较。
While tv signal is switched , scm outputs volume adiusting code with refference to default volume in a certain period to realize closed loop control of tv accompanyind sound , afterwards back to open loop control 当信号切换操作时,在一定时间内以默认音量值为参照,由单片机发出电视接收机音量调节编码,实现电视伴音音量闭环调控,调控结束后恢复开环形式。
The fruits of emulational research are obtained : 1 the method of divided planar correlation deal with wonderfully and can detect the target information of tv sound fm signal about time difference and doppler frequency with this understanding of - 20db snr 仿真研究成果: 1 、分段二维相关处理方法效果不错,能在- 20db信噪比情况下,可靠地检测到电视伴音调频目标信号的时差与多普勒频率信息。
The master dissertation introduces passive correlative orientation system and base theory in signal dispose briefly in the first place . the system takes tv sound fm signal from tv satation signal . the power rate of tv station signal to sound signal is ten to one . in the case of submerged by mussy weave and machine ' s hot noise , dispersed target signal is feeble 系统采用电台的电视伴音调频信号,其中电台信号与伴音信号功率之比基本为10 : 1 ,并且目标散射信号较弱,一般情况下淹没在杂波和机器热噪声之下,采用常规的脉冲检测方法很难对远距离的目标进行检测,而以电台直达信号作为参考与目标回波信号进行相关检测;系统中信号的相关处理会产生旁瓣,而强目标的旁瓣会影响附近的弱目标检测。
电视: television; T.V.; teevee伴音: audio; accompanying sound; a ...电视伴音传输: television transmission audio电视伴音电路: television audio circuit; television voice circuit电视伴音通道: tvsc television sound channel电视伴音信道: television sound channel电视伴音调谐器: television sound tuner电视伴音调制器: television sound modulator电视伴音发射机: television aural transmitter; television sound tra mitter; television sound transmitter; television-sound transmitter电视伴音分离设备: sound-vision separator电视伴音合成设备: sound-vision combiner电视伴音扬声器: backgrund loudspeaker多声道电视伴音: mts multi-channel television sound; mts multi-television sound双通道电视伴音系统: dual channel tv sound system有声显示, 电视伴音显示: aural presentation丽音是广播电视伴音数字化的俗称: nicam多路伴音电视: tv with multi-channel sound电视的双伴音广播: simultaneous transmission of two languages on television双伴音电视传输: double tone television transmission双伴音电视广播: two-language on television双伴音电视接收机: dual channel television sound receiver双伴音电视制式: dual channel television sound system伴音: (配合图像的声音) audio; accompanying sound; aural; sound accompaniment伴音分路电视接收机: split sound receiver伴音分路放大电视接收机: split sound receiver