To evaluate the applicability and accuracy of multi-distance measuring equipment (DME) positioning, a computer-controlled avionics-data acquisition system (CADAS) was developed. CADAS adaptively tunes the DME interrogator and acquires selected, time tagged data for recording on magnetic tape. With CADAS several multi-DME evaluation flights were executed. The results on the position accuracy and coverage of the multi-DME system are presented. This system was also used as a reference for the calibration of an Inertial Sensor System (ISS), VHF omnidirectional radio range (VOR) navigation beacons, and an air traffic control (ATC) radar. The results of these ISS calibration flights are presented. The measured errors are compared with the computed error variance obtained by the application of a covariance model and ISS component error variances. Furthermore, the VOR calibration results for various orbital and radial flights on standard and Doppler VORs are presented. The influence of the position where the VOR is calibrated as well as the possibility of calibrating multiple VORs on the same flight are investigated. Results of ATC radar power density measurement flights at various altitudes and flight tracks are given.


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    Title :

    Navaid Calibration Evaluation with a Computer Controlled Avionics Data Acquisition System


    Contributors:
    F. J. Abbink (author) / R. Krijn (author)

    Publication date :

    1978


    Size :

    41 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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