High-speed passive distance measuring method based on oxygen absorption and multiple regression
A technology of passive ranging and oxygen absorption, applied in the field of distance measurement, can solve the problems of large distance value error, excessive calculation amount, poor real-time performance, etc., and achieve the effect of uniform distribution, long detection distance and stable oxygen concentration
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[0024] combined with figure 1 , describe this specific embodiment in more detail: the passive ranging method based on oxygen absorption and multiple regression algorithm proposed in this specific embodiment, its basic idea is: use the large field of view infrared telescopic system 3 to receive the measured target 1 emits the radiation signal after atmospheric transmission and attenuation 2, and obtains the interference signal through double-beam interference modulation 4; obtains the target spectrum through the interference signal through fast Fourier transform (FFT) 5, and extracts the 750-770nm range For spectral data, assuming that the target is a black body or gray body, the Planck black body radiation formula is introduced, combined with the atmospheric transmission model 6, multiple regression fitting 7 is performed on the target spectral information after atmospheric transmission attenuation, and the target distance information 8 is obtained.
[0025] combine figure 2...
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