Abstract：In order to solve the problem that the measurement accuary of the vehile gas monitoring sensor is low. Forward and reverse modified algorithms were used to post-correct their measurement, thus improved the credibility of the measurement data. Through the comparison between the measurement results of the vehicle gas sensor and the fixed monitoring point analysis instrument, the two algorithms were verified, and the measurement error is reduced by 50% after the measurement result was corrected. In addition, a multilevel modified model based on these two algorithms was proposed and evaluated, and the test results of these two algorithms on the model satisfied the demand basically.
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2019, Vol. 40 
