On the bases of analyzing triangle wave form modulated LFM, the method of using DDR (Dual Channel Directional Doppler range) technique to eliminate the influence of speed to range is presented.

在分析三角波调制的线性调频信号的基础上，提出了用DDR技术消除速度对测距的影响方法。

youdao

In the implementation, we used the multiprocessing method in QNX to analyze the general flow chart of system, and divided the realization of dual downstream channel into three modules.

在具体实现上采用了QNX的多进程编程思想，对整个系统的流程进行了分析设计，将双下行信道的实现分为三个大的模块进行讨论。

youdao

To study the method to detect trace arsenic and mercury in sea water in the same time with dual channel atomic fluorescence.

建立了双道原子荧光同时测定海水中痕量砷和汞的方法。

youdao