Research And Implementation Of Atmospheric Refraction Error Correction System In Rang Measurement

With the increasingly expanded and updated a domestic range, for variousmodels,different time,different spatial objectives across the measurement task in thedevelopment of space target,in the measurement accuracy is also put forward a veryhigh request.Radar range of photoelectric equipment as the important spatial locationinformation of target measurement equipment,has play a decisive role position in thewhole range of data measurement and data processing,the measuring accuracy of thetest data processing tasks directly affected to a certain extent,whether the successfulcompletion of.Radio wave refraction error correction is one of the main sources of errorin radar data processing,the atmospheric refractive index model and the radio waverefraction correction methods,has important effect on the accuracy of radiowaverefraction correction.But the current range of atmospheric refraction correction modelresearch has not formed a complete system,with regional, in different regions, theatmospheric refraction model has certain difference on the range precisionmeasurement,will bring great impact.Linear regression method has better measurementaccuracy for this type of project,various target measurement task but the range fordifferent types of test task,its trajectory is great, the target measured trajectory andfitting a theoretical trajectory far.Radio wave refractive correction error is one of the most important errorsource,the atmosphere refractive model and radio wave refractive correction methodsare important aspect of radio wave refractive correction accuracy.According to thenecessity of Target Range,the project combines geography position and climatespecialty of Target Range,use historical observation data and sounding data of Targetrange and weather department,analyses the specialty and rules of weather refractionspace distributing,searches after the weather refractive correction model and computingmethod of computer real-time measurement processing in test,researches and analysesthe principle and characteristic due to U.S. Standard Atmosphere,1976,Hopfieldmodel,exponent model and subsection model.At last,the project builds up the weather refractive correction error exactitude subsection and sub-month model.Based onobservation data of Target Range,the model can imitate weather refractive sectiondata,the data increased real-time data processing precision,and can fulfill Post-Flightprocessing precision.