METHOD AND DEVICE FOR MEASURING THE INTERFERENCE LEVEL OF VSAT TDMA TERMINALS CAUSING CROSS-POLAR AND/OR TERMINALS CAUSING CROSS-POLAR AND/OR COMMUNICATION LINK

摘要

It is described a device for measuring the interference level of VSAT TDMA terminals, the terminals (13) communicating with a hub station (14) via a satellite (11). The device includes a forward link receiver (21) adapted to receive signals transmitted from the hub station (14) to the terminals (13) via said satellite (11), said receiver being capable of demodulating, decoding and analysing signalling information present in the forward link, including burst time plan, and terminal ID, a return link receiver (22) adapted to receive, demodulate and decode signals transmitted from each terminal (13) to the hub station (14) via said satellite (11) with extraction of the unique terminal network ID,an interfered link receiver (23) adapted to measure received interfering burst power in a link where interference occurs, said receiver being configured and synchronized with the burst time plan found from the forward link or decoded bursts from the return link receiver, performing interfered burst power measurements using power averaging or correlation techniques, anda controller (24) adapted to control and synchronize the receivers, analyse and correlate information received from the receivers to achieve synchronisation between the operational and interfered links(21, 22, 23) and report the power level of the interfering bursts for each terminal ID.Methods for operating the device are also described.