New capabilities for PCL system: 3D measurement for receiver in multidonors configuration

For more than 15 years, the interest for PCL (Passive Coherent Location) system has been growing. It began with the analog waveforms like TV and FM; now the interest for digital waveform has increased and especially for DVB-T (Digital Video Broadcasting-Terrestrial). Despite all these interesting progress, some new requirements mentioned by several potential users of such PCL systems have appeared like an altitude estimation and especially for low altitude targets. Some works have began in this area especially for tracking consideration. In order to illustrate the PCL capabilities, we\´ll present some elevation measurements using a 2D array with DVB transmitters in a SFN (Single Frequency Network) configuration. The corresponding 3D tracking results will also be presented. These measurements will be analysed according to the "GPS" reference plots. In a second part, after a short description of the main differences between the three main kinds of illuminators (FM, DAB, DVBT), we\´ll consider the complementarities of these potential donors in order to outline some elementary rules for choosing the most appropriate waveforms according to our final requirements.