V.A. Bulanov1, M. Mussalam2, A.A. Ispulov3, A.Yu. Truschinsky4

1–4 MESC AF «N.E. Zhukovsky and Y.A. Gagarin Air Force Academy» (Voronezh, Russia)

The high level of fluctuation errors in estimating the altitude-velocity parameters of the carrier's flight by known methods of estimating altitude and velocity components from the signals of a coherent radio altimeter does not allow them to be used in aircraft navigation. Therefore, in the interests of reducing estimation errors, it is proposed to take into account errors in the spectral processing of the echo signal of a coherent radio altimeter.

Goal – development of a method for estimating the altitude-speed parameters of aircraft flight based on the analysis of the power spectrum of the echo signal of a coherent RV, taking into account the errors of spectral processing of the echo signal.

As a result of the conducted research, a method for estimating the flight altitude, ground and vertical speed of an aircraft was developed based on the analysis of the echo power spectrum boundary of a coherent radio altimeter, the correlation matrix of errors in estimating the echo power spectrum boundary was calculated, the potential accuracy of estimating the flight altitude, ground and vertical speed of an aircraft based on the signals of a coherent radio altimeter was calculated.

Practical significance – developed method will be useful for developers of modern coherent radio altimeters.

Bulanov V.A., Mussalam M., Ispulov A.A., Truschinsky A.Yu. Estimation of aircraft navigation parameters by a coherent radio altimeter taking into account errors in spectral processing of the echo signal. Achievements of modern radioelectronics. 2022. V. 76. № 10. P. 58–66. DOI: https://doi.org/10.18127/j20700784-202210-06 [in Russian]

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