An analysis and research on composite modulation algorithm
This paper focuses on the problem of Doppler spread caused by high-speed target motion during coherent accumulation period for linear FM signals, then a Dual linear FM composite algorithm is proposed. The theory analysis and simulation are presented, and the conventional processing algorithm is compared with the proposed algorithm based on the echoed signal. The results shows that the composite algorithm is useful and able to be realized in engineering.
Research on Detection and Tracking Identification Algorithm of Weak Moving Target
Aiming at the features of weak moving target's detection and tracking identification technology,on the basis of introducing the difficult points of weak moving target's detection and tracking identification technology,the weak moving target's detection and tracking identification algorithm was discussed,and the detection and tracking identification algorithm was analyzed in detail according with image pre-processing,selection of target feature and target tracking,and the algorithm method and its steps were also pointed out.The simulation result shows that the algorithm is effective to identify and detect for the tracing object.All this work is significative for enhancing the research level of weak moving target's detection and tracking identification technology.
The Analysis on Fire Smoke Exhausting Robot Vibration Based on Wavelet Transform
Belt relaxation, which affects a lot on operation reliability of the fire smoke exhausting robot, is hard to detect. In this paper, a new method for belt relaxation feature recognition based on continuous wavelet transform (CWT) is proposed, and a vibration model which simplified the robot as a 2-dof forced vibration system under harmonic excitation is established. The vibration acceleration signal has been collected using the IEPE sensor and data acquisition card, experimental results verified the accuracy of the vibration model, and weak impact signal caused by the belt relaxation was distinguished, that testify the practicability of the CWT method in belt relaxation feature recognition.