1. Workshop EGNOS KRAKÓW 2004 1 GNSS RECEIVER TESTING TECHNIQUES IN A LABORATORY ENVIRONMENT Institute of Radar Technology Military University of Technology Warsaw Poland M. Sc. E.E. MIELNIK Piotr

2. Workshop EGNOS KRAKÓW 2004 2 Area of activity the Institute of Radar Technology connected with satellite navigation systems technique Jamming cancellation techniques (not only in military aspects - warfare) Jamming cancellation techniques (not only in military aspects - warfare) Testing the properties of GNSS receivers Testing the properties of GNSS receivers Developing and testing of algorithms for INS/GPS receivers Developing and testing of algorithms for INS/GPS receivers Developing CRPA antennas (adaptive antenna) Developing CRPA antennas (adaptive antenna) Developing pseudosattelite construction (pseudolite) Developing pseudosattelite construction (pseudolite) Developing DGNSS landing systems (LAAS) Developing DGNSS landing systems (LAAS) Researches in attitude determinationreceivers area Researches in attitude determination receivers area Researches in time synchronizations area Researches in time synchronizations area

3. Workshop EGNOS KRAKÓW 2004 3 The following methods are considered:  controlled antenna pattern  front-end filtering  signal detection algorithms (RFI, jamming and spoofing signals)  signal processing algorithms  code / carrier tracking loop  integrated demodulator navigation The works concentrate on three aspects:  designing antenna systems Jamming cancellation techniques  detection, identification and localization of jamming sources null steering and beam forming null steering and beam forming algorithms used before and after correlation algorithms used before and after correlation  designing specialized receivers

4. Workshop EGNOS KRAKÓW 2004 4 Algorithms for data processing and signal monitoring Low Noise Amplifier Automatic Gain Control Signal conversion Delay Lock Loop Phase Lock Loop Data demodulation Testing the properties of GNSS receiver The essence of the investigations is to find disadvantages of each receiver simulated signal

5. Workshop EGNOS KRAKÓW 2004 5 Testing new multi frequency receiver constructions Currently still in Simulink environment

6. Workshop EGNOS KRAKÓW 2004 6 Designing and checking algorithms for integrated navigation systems AHRS GPS Algorithms implementation Chip & board The main goal is to construct Embedded GPS/INS module (EGI)

7. Workshop EGNOS KRAKÓW 2004 7 Developing CRPA antennas (adaptive antenna) These applications request Buttler matrix

8. Workshop EGNOS KRAKÓW 2004 8 Tans Vector – GPS receiver for attitude determination Not only for aircraft navigation

9. Workshop EGNOS KRAKÓW 2004 9 The basis of MUT laboratories Electronics faculty The laboratory of digital techniques The laboratory of digital techniques The laboratory of antenna techniques The laboratory of antenna techniques Avionics laboratory Avionics laboratory GNSS simulator Chamber Stands to design specialized chips

10. Workshop EGNOS KRAKÓW 2004 10 The only device of this class in Poland The Avionics Laboratory at the Institute of Radar Technology

11. Workshop EGNOS KRAKÓW 2004 11 The short description of GNSS Simulator Current Options generation of 16 satellite signals (GPS L1,code C/A and P) generation of 16 satellite signals (GPS L1, code C/A and P) generation of SBAS signals (WAAS, EGNOS, MSAS) generation of SBAS signals (WAAS, EGNOS, MSAS) object remote control in the real time (closed loop) object remote control in the real time (closed loop) simulating the DGPS reference station (with RTCM protocol) simultaneously to the operation simulating the DGPS reference station (with RTCM protocol) simultaneously to the operation simulating the baro altimeter simultaneously to operation simulating the baro altimeter simultaneously to operation tools for analyzing the EUT output data in the real time tools for analyzing the EUT output data in the real time software that enables to generate data for GPS L2c, L5 and GLONASS signals software that enables to generate data for GPS L2c, L5 and GLONASS signals ! simulating the LAAS reference station (with RTCA protocol) simultaneously to the operation simulating the LAAS reference station (with RTCA protocol) simultaneously to the operation

12. Workshop EGNOS KRAKÓW 2004 12 GPS SYSTEM SpaceSegment Signalpropagation UserSegment DGPS LAAS System SBAS Systems

13. Workshop EGNOS KRAKÓW 2004 13 satellites orbit motion edition (to satellite constellation control) satellites orbit motion edition (to satellite constellation control) Space Segment navigation data control navigation data control ISCN and SA distortion ISCN and SA distortion satellites signal power control satellites signal power control satellite transmitter antenna characteristic edition satellite transmitter antenna characteristic edition

14. Workshop EGNOS KRAKÓW 2004 14 Signal propagation iono and tropo- parameters edition (atmosphere modelling) iono and tropo- parameters edition (atmosphere modelling) navigation data distortion (with bit resolution) navigation data distortion (with bit resolution) multipath simulation multipath simulation terrain obstacles simulation terrain obstacles simulation signal phase and amplitude distortion modelling signal phase and amplitude distortion modelling

15. Workshop EGNOS KRAKÓW 2004 15 User segment vehicle position and motion simulation vehicle position and motion simulation receiver antenna characteristic modelling receiver antenna characteristic modelling vehicle type choice (aircraft, ship, car and spacecraft) and its dynamics parameters vehicle type choice (aircraft, ship, car and spacecraft) and its dynamics parameters receiver antenna orientation with respect to Body Axes of vehicle receiver antenna orientation with respect to Body Axes of vehicle

16. Workshop EGNOS KRAKÓW 2004 16 EGNOS signal message data control (16 types of messages) message data control (16 types of messages) signal power control signal power control edition of Monitoring Stations location edition of Monitoring Stations location edition of degradation parameters edition of degradation parameters user range error edition user range error edition covariance matrix edition (clock, ephemeris) covariance matrix edition (clock, ephemeris) almanac edition almanac edition ionospheric error data edition ionospheric error data edition

17. Workshop EGNOS KRAKÓW 2004 17 Equipment Under Test Goals Laboratory Basis Type of receiver Data protocols Measurement equipment Expectations Research methodology PROJECT

18. Workshop EGNOS KRAKÓW 2004 18 GNSS receiver performance characteristics studies* * This set is used to check some specialized software for awareness situations, too

19. Workshop EGNOS KRAKÓW 2004 19 Examination of GPS receivers for time synchronization

20. Workshop EGNOS KRAKÓW 2004 20 CRPA antenna tests research set

21. Workshop EGNOS KRAKÓW 2004 21 Test bench for LAAS application

22. Workshop EGNOS KRAKÓW 2004 22 Thank you for attention