TITLE:
Simulation Analysis of Transponder Power Based on Target Flight Trajectory
AUTHORS:
Xin Chen, Xiaofei Zhang, Weijiang Qiu, Xin Tu
KEYWORDS:
Transponder, Coordinate Transformation, Antenna Gain
JOURNAL NAME:
Open Journal of Modelling and Simulation,
Vol.10 No.2,
April
15,
2022
ABSTRACT: The directional angle of the exterior trajectory measurement
equipment in the transponder antenna coordinate system is an important basis
for interpreting the transponder antenna gain, analyzing the uplink and
downlink power of the transponder, and evaluating the measurement and tracking
ability of the equipment. The mathematical model established in this paper
deduces the direction angle of the exterior trajectory measurement equipment in
the transponder antenna coordinate system according to the track information of
the flight target, and then obtains the transponder power received by the
exterior trajectory measurement equipment combined with the installation
position of the transponder, the antenna pattern and the secondary radar
formula. It can effectively evaluate the tracking ability of the equipment in
measuring segment and adjust the working state of the equipment according to
the actual situation. At the same time, it provides a theoretical basis for the
ground measurement equipment to receive the transponder power is too low,
resulting in the measurement data accuracy is not up to standard, or even lost.