Frequency domain testing and of Instrument landing System signals

The instrument landing system is an important component of civil aviation navigation systems. at present, maintenance personnel usually start from the time domain for basic maintenance and testing of equipment, However, for signals with lower intensity, the test results often cannot be accurate. From a frequency domain , precise measurement of the strength of each frequency point of the signal can be achieved, Based on the measurement of a spectrograph, it is possible to measure and calculate the signal components of a single antenna, Determine the accuracy of single antenna DDM and adjust the output signal of transmitter SBO, Realize precise adjustment of feedback. At the same time, it is also important to analyze the signal interference sources and precautions for operation and maintenance of the instrument landing system in daily operation and maintenance.