Signal Modulation Design of Reflective Intensity Sensor Under Strong Signal Full Coverage
Reflective intensity sensors are often subject to interference and influence in strong signal full coverage en-vironments,resulting in a decrease or even distortion in the quality of sensor signals,which poses difficulties for sub-sequent signal processing and data analysis.A signal modulation method for reflective intensity sensors under strong signal full coverage is proposed.Firstly,determine the sparsity of sensor signals in a strong signal full coverage envi-ronment,and establish an observation matrix for the signal based on environmental interference factors.Calculate the estimated value of the sparse vector through optimization algorithms,and use the estimated value of the sparse vector to compensate for the observed signal,obtaining the compensated signal.Then,using orthogonal phase-locked amplifi-cation technology,the compensated signal is multiplied with two strictly orthogonal reference signals to improve the signal-to-noise ratio and obtain the enhanced signal.Finally,using the continuous phase multi branch modulation method,the enhanced sensor signal is subjected to bit information separation,two-dimensional signal mapping,and carrier phase modulation operations to complete signal modulation.The experimental results show that the proposed method has strong scalability,high stability,and strong anti-interference ability.
reflective intensity sensorsignal modulationorthogonal phase-locked amplificationcontinuous phase multi branch modulation
NETL
NSTL
万方数据
