VOR RF actuator research based on software defined radio

Abstract

Abstract:

To test and maintain the VOR receiver, an actuator which can simulate the ground station RF signal is needed.The current use of RF actuator is generally traditional special hardware equipment, the parameters could not be adjusted flexibly, and the price is higher. In order to solve this problem, the principles of VOR RF signal are analyzed; VOR RF actuator based on SDR is designed. The zero-IF software radio structure is used. The RF signal transmitted through the universal hardware platform is quadrature modulated on computer, and the modulation parameters can be adjusted flexibly. The system could be controlled through human-machine interface,network or GPIB. The system is tested by spectrum analyzer and RF signal of the system is recorded and analyzed through Matlab. Results show that the system error is acceptable according to relevant standards, and could provide the VOR receiver with adjustable RF signal.

Key words: VOR, SDR, RF excitation, zero-IF, quadrature modulate, PXI bus

CLC Number:

MA Tengda, FAN Zhiyong, WANG Kai. VOR RF actuator research based on software defined radio[J]. .

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