300mhz-800mhz analog TV station transmission power radiation test system

Abstract

The invention discloses a 300MHz-800MHz UAV (unmanned aerial vehicle) low-altitude radiation test system for the emission power of a simulated television station, and belongs to the performance indextest field of a radio transmitting system. The test system comprises an automatic test subsystem and a UAV; the automatic test subsystem comprises a measuring device, a range finding and positioning device, a spreading path loss analysis module, an equivalent isotropically radiated power estimation module and a data integration module; and the measuring device and the range finding and positioningdevice are arranged on the UAV. The measuring device receives an electromagnetic wave emitted by the tested station via a reception antenna, converts the electromagnetic wave into an electric signal,and calculates the peak power Pr input to the reception antenna according to the electric signal. The spreading path loss analysis module sets a spreading path loss A according to the central frequency fMHz and distance r of the measuring device. Thus, detection of equipment is much less limited by the landform, the broadcast and television station can be detected more comprehensively and accurately, and radio monitoring is more timely, flexible and autonomous.

Description

technical field [0001] The invention belongs to the field of performance index testing of radio transmission systems, and in particular relates to a low-altitude radiation testing system for unmanned aerial vehicles that simulates the transmission power of a TV station at 300MHz-800MHz. Background technique [0002] In the prior art, the test of the transmitting power of the analog TV station is mainly carried out through conduction and ground radiation reception. In the conduction mode, the station transmitter outputs the RF power to the input terminal of the test equipment through the coupling port, and the transmission power of the transmitter can be calculated according to the coupling power and coupling coefficient received by the test equipment. This traditional conduction test method is not only unable to investigate the influence of the antenna feed system on the actual radiation characteristics of the station, but also often cannot be carried out because the transmi...

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Problems solved by technology

[0003] Aiming at the current problems of large measurement errors, inflexible test work, and high requirements for the location of the test site when testing the transmitting power of analog TV stations, the present invention provides a low-altitude unmanned aerial vehicle with a transmitting power of 300MHz-800MHz analog TV stations. Radiation Test System

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