为了满足地震勘探高精度、高分辨力的需要，进一步研究了多普勒测量技术和弱信号检测技术。
To meet the seism detections require of high accuracy, high resolving power, the measurement technique of Laser Doppler and detection technique of faint signal are further researched.
为了解决强弱混合信号中检测和估计弱lfm分量参数的问题，在上面方法的基础上，结合逐次消去技术提出了多分量LF M信号参数估计算法。
By combining successive elimination technique with above method, weak LFM signals can be detected among some strong LFM signals and their parameters are estimated.
最后介绍了混沌技术在电子干扰中的应用，包括利用混沌技术实现对弱信号的检测以及混沌保密通信。
Lastly, it is introduced for chaos 'application in electronic jamming. It includes the detecting technology for weak signal and chaos security communication.
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