Method for testing transmitting power radiation of simulation TV station under city environment

Abstract

The invention provides a method for testing the transmitting power radiation of a simulation TV station under a city environment, and belongs to the field of performance index testing of a radio transmitting system. The testing method comprises the following steps: setting the central frequency f of a power measurement device; adjusting the polarization direction and the pitching direction of a receiving antenna, and fixing the receiving antenna after the maximum signal value is found out; measuring and recording the distance L between a transmitting antenna and a receiving antenna; determining the space propagation loss Lprop; measuring and recording the peak power Pr, determining the EIRP (Equivalent isotropically radiated power) of a tested station according to the following formula: EIRP=Pr-Gr+Lr+Lprop, wherein Gr refers to the gain of the receiving antenna, and Lr refers to the loss of a receiving feeder and a connector. Under the city environment, the method can be used for comprehensively and accurately monitoring a station radio transmission system including a transmitter and an antenna feed system, and the operation flexibility and autonomy are improved greatly.

Description

technical field [0001] The invention provides a radiation test method for simulating the transmit power of a TV station in an urban environment, and belongs to the field of performance index test of a radio transmission system. Background technique [0002] In the prior art, the test of the transmitting power of the analog TV station is mainly conducted through conduction. The transmitter of the station outputs the RF power to the input terminal of the measurement 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 measurement 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 transmitter of the station does not have a coupling port or the coupling parameters of the coupling por...

AI Technical Summary

Problems solved by technology

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 transmitter of the station does not have a coupling port or the coupling parameters of the coupling port are missing.

In addition, from the perspective of the actual effect of radio monitoring, because the traditional conduction test method requires the coordination and cooperation of multiple departments such as testing institutions and stations, the timeliness, flexibility and autonomy of monitoring work will also be affected.

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