wireless time signal

Wireless signal propagated in the wireless channel will be affected by multi-path time delay spread, Doppler shift, angular spread and other characteristics of multi-path fading, leading to the received signal distortion in amplitude, phase and frequency.

无线信号在无线信道中传播，容易受到多径时延扩展、多普勒频移、角度扩展等多径衰落特性影响，导致接收信号在幅度、相位和频率上失真。

Firstly, the transmitter determines the proper time interval d according to the coherence time of the wireless channels. Then several signal vectors with an interval of d are combined together by a singular matrix, and the result vectors are transmitted at the corresponding time slots.

在该方案中，发射机根据信道相干时间确定合适的时隙间隔d，并利用奇异矩阵对多个相距d个时隙的信号矢量进行线性组合，从而得到系统在对应时隙的发射信号。

The radio direction finding is widely used in military and civilian fields and it can locate the wireless signal, track the signal, finally the azimuth information in which we are interested is obtained in real time.

无线电测向被广泛应用于军事和民用领域，能实现对无线信号定位，进而还可以进行跟踪，实时获取感兴趣目标的方位信息。

Must be wireless, and real-time waveform of the digital audio signal integrity test system.

要求必须无线方式，并且能实时的对数字音频波形信号完整性测试系统。

Wireless measurements occur between MS and BTS and the major measurement parameters include signal level, signal quality, time advance and so on.

无线测量集中在移动台与基站之间，主要测量信号电平、信号质量、定时提前量等等。