PIATTAFORME STRATOSFERICHE SIGINT

Transcription

1 Convegno: Gli Aeromobili a Pilotaggio Remoto: le nuove frontiere del cielo Gruppo di Lavoro PIATTAFORME STRATOSFERICHE SIGINT Ing. Rita Roscigno rita.roscigno@thalesaleniaspace.com 1

2 SIGINT PAYLOAD OVERVIEW (1/3) The Payload is constituted by: 2 antennas circular polarized, 2 SIGINT (ELINT & COMINT) electronic unit Harness between antennas and SIGINT electronic units Frequency band stretches between 200 MHz and 2,5 GHz with a DOA measurement capability Each electronic unit is composed of the following sub- units: Payload Receiver Sub- unit Payload Power Converter Sub- unit Payload Processing and C&C Sub- unit Operating Modes: Stand- by mode Acquisition mode 2

3 SIGINT PAYLOAD OVERVIEW (2/3) ELINT Products: data result from the ELINT signal processing Signal Descriptor Words (SDW): The SDW contains different synthetic parameters of the intercepted signal (date of arrival in order to locate the signal on ground, pulse width, frequency measurements, level). The parameters are measured only when there is a signal detection in the Signal Measuring Detector. The analyzed frequency bandwidth (ELINT frequency channel) is covered with several Signal Measuring Detector. ELINT Noise Measurements (ENM): Noisemeasurements allow on board payload softwareto adjust the receiver noise power to the coding range of the ADC. Noise measurements allow also detection threshold control. These measurements may be useful on ground to calculate Signal NoiseRatio (SNR). Position Speed and Time (PST) data: necessary on ground to locate the intercepted signals usingdoppler measurement techniques on thefrequency and on thepulse. COMINT Products: data result from the COMINT signal processing 04/09/2015 COMINT Acquisition Samples (CAS): The COMINT intermediary frequency signal (output of thepayload receiver) isanalog to digitalconverted (ADC 12bits). COMINT Noise Measurements (CNM): Noise measurements allow on board payload software to adjust the receiver noise power to the coding rangeof the ADC. These noise measurements maybe useful on ground to calculate SignalNoise Ratio (SNR). Position Speed and Time (PST) data: necessary on ground to locate the intercepted signals using DOA technics. Ref.:

4 SIGINT PAYLOAD OVERVIEW (3/3) Mass and Power Budgets 4

5 PROSES (Study, Design and Validation of an ELINT Satellite System) PNRM 2013 Main objectives: study of an ELINT end- to- end System, based on Microsatellites; development of a demonstrator representative of ELINT System, used to validate the main functionalities & performances. Demonstrator: modular and flexible BB, based on a wideband receiver around a digital processing core. It is composed by: RF signal generation unit: RF signals will be representative of emitters in the 2-18 GHz band Analog RF section, 2 independent RF receivers (RX RF1, for 2-6 GHz sub- band and RX RF2, for the 3 sub- bands 6-10 GHz, GHz and GHz) Digitizers for the analog to digital conversion. 2 GHz 6 GHz 6 GHz 18 GHz GHz D.X3 Reference Scenario RF signals generation GHz RF Analogue Section and Calibration 2 6 GHz 6 10 GHz Local Oscillators Unit N 4 Digitizers (signal sampling) Sampling Frequency control Local Oscillators Synchronization Power Supply N 4 Firmware FPGA (detection and assessment of emitters parameters) DSP / Controller Processor Signal Processing Usual Emitters characterization TOA management LO synchronization Search synchronization strategy management Transceiver management Data Recorder database data format synthesis TX/RX Ethernet Modem (Transceiver) Ground Station TX/RX Modem (Transceiver) Signal Processor, composed by FPGA and DSP, receives input signals from the digitizers and performs the FFT and the measurements of pulse parameters. Data recording memory for digitized data recording (PDM) in order to allow post- processing. Main processor for management of the whole on-board system and for post-processing of data. Workstation, Ground operator or the remote-control panel Transceiver data subsystem. Proposed industrial organization: Thales Alenia Space Italia as project responsible Sigma Consulting Sistemi Integrati