Ing. Javier Roldan

Provision of consultancy services to EUMETSAT. Pre-launch Space to Ground RF compatibility testing between EPS-SG (Eumetsat Polar System - 2nd Generation) weather spacecrafts (TT&C and Payload) and all the antennas of the Ground Segment. Tasks include: - definition of test plans, - preparation of test procedures, - tests preparation and logistics - execution of tests on the antenna sites (operation of RF suitcases and antennas equipment) - preparation of test reports.

Providing engineering consultancy to ESA / ESOC. Operations and maintenance of ESA TT&C Ground Stations. Subsystem engineer for several core equipment. Deployment, validation and release for operations of systems. Ground Operations Manager on 5 Galileo LEOPs (ESOC and CNES) including simulation campaign, operational procedures definition, prep and validation of the Ground Segment, system performance tests, planning G/S coverage and shifts organization, interface with the SOM, OD and FCT, use of SCOS2000.

Engineering and operation related aspects of several ESA Ground Stations. Tasks include: - support to current missions (Integral, Cluster, XMM, Metop, ATV, Galileo, ISS) by investigation and fix of incidents in all the GS subsystems (Antenna, RF, IF, BB and data processing, Frequency & Timing, M&C, ...) - Support to new missisions (link budget, HW and SW upgrades, subsystems configuration and testing - Launches and LEOP preparation, and support (SPTs, MRTs,...) - ILS

Engineering leadership for the design, integration and validation activities of Millitar VSAT and Ground Stations. - Analysis of requirements. - Writing Design and Interface documents. - Writing Verification and Validation Plans. - Review of Test Procedures - Witnessing and performing Factory and Site Acceptance Tests. - Maintaining and troubleshooting of satellite terminals during warranty period. - Training to Operators.

Running test procedures on satellite communications equipment and ground segment terminals (X, KU and Ka bands).

Département Ligne de Produits Hyperfréquence. Site de Touluse (France) 3 months Stàge during summer holidays. CEM studies and measurements on bipolar and FET based amplifiers (satellite payload).

5-Year university studies focused on radiofrequency (RF), microwave (uW) and optics technologies and devices, propagation, antennas, analog and digital electronics, signal processing, data transmission, networks, computer science, communication systems…