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The angle-of-arrival integrity monitoring efficiency under multiple observations


A.P. Melikhova – Part-programming engineer, LLC «Special Technology Center» (SPb). E-mail: I.A. Tsikin – Dr. Sc. (Eng.), Professor, Peter The Great St.Petersburg Polytechnic University. E-mail:

Mostly known interferences to global navigation satellite systems are ionosphere and tropospheric influences, ephemeris data and selective availability errors, satellite onboard and user receiver clock errors, differential corrections errors and the interferences caused by false navigation signal source impact. Particular attention must be paid to the intentional interference caused by the false navigation signal source impact. In case when power of false signal is greater than the power of the authentic signal user calculate incorrect information about its position. As a result of such a failure the measured position of a user can significantly deviate from its true values. A case when this error value exceeds an admissible limit can be referred to as a navigation system integrity failure, and a procedure to detect such a failure is known as integrity monitoring. The paper considers the navigation integrity monitoring method which is based on the multiple observations of the measured and calculated navigation signal source angle-of-arrival parameters. The decision-making procedure of integrity presence or absence is performed on the basis of a separate analysis of multidimensional samples for each of the direction-finding parameters (azimuth and elevation) followed by logical addition of the decisions. The decision-making algorithm is based on the maximum likelihood method with decision threshold for Neumann–Pearson criterion. This is considered a static model of the direction-finding parameters behavior when the measured parameters variances are much larger than the calculated ones, which is typical for antennas with a small number of elements. The main probability-based integrity monitoring characteristics for this algorithm were obtained, and the areas where the algorithm is effective are analyzed. The advantage of multiple observations method over the single one is estimated .


  1. Kaplan E., Hegarty C. (ed.). Understanding GPS: principles and applications. Artechhouse. 2005.
  2. Directorate G.P.S. Navstar GPS space segment/navigation user segment interfaces // Interface specification IS‑GPS‑200. revision G. 2012. T. 5.
  3. Interfejjsno-kontrolnyjj dokument GLONASS. Navigacionnyjj radiosignal v diapazonakh L1 i L2 (redakcija 5.1) [EHlektronnyjj resurs] // Rossijjskijj nauchno-issledovatelskijj institut kosmicheskogo priborostroenija. Moskva. 2008. Rezhim dostupa:
  4. Jafarnia-Jahromi al. GPSvulnerabilitytospoofingthreatsandareviewofantispoofingtechniques // InternationalJournalofNavigationandObservation. 2012. Article ID 127072 (16 p).
  5. Sathyamoorthy D. Global navigation satellite system (GNSS) spoofing: a review of growing risks and mitigation steps // Defence S&T Technical Bulletin. 2013. T. 6. № 1.
  6. Tippenhauer al. On the requirements for successful GPS spoofing attacks // Proceedings of the 18th ACM conference on Computer and communications security. ACM. 2011. P. 75−86.
  7. Venediktov V.T., Cikin I.A., SHHerbinina E.A. Priem i obrabotka signalov sputnikovykh navigacionnykh sistem v zadache prostranstvennogo pozicionirovanija // Informatika. Telekommunikacii. Upravlenie. 2013. S. 29−38.
  8. Vetrov JU.V., Davydenko A.S., Carik O.V. Povyshenie tochnosti prostranstvennogo pozicionirovanija obektov za schet ispolzovanija signalov sputnikovykh navigacionnykh sistem // Nauchno-tekhnicheskie vedomosti Sankt-Peterburgskogo gosudarstvennogo politekhnicheskogo universiteta. 2009. № 76.
  9. Montgomery P.Y., Humphreys T.E., Ledvina B.M. Receiver-autonomous spoofing detection: Experimental results of a multi-antenna receiver defense against a portable civil GPS spoofer // Proceedings of the ION International Technical Meeting. 2009.
  10. Daneshmand al. A low-complexity GPS anti-spoofing method using a multi-antenna array // ION GNSS12 Conference, Session B3. 2012. T. 2. S. 2.
  11. Motella al.PerformanceassessmentoflowcostGPSreceiversundercivilianspoofingattacks // SatelliteNavigationTechnologiesandEuropeanWorkshoponGNSSSignalsandSignalProcessing (NAVITEC). 2010. 5thESAWorkshopon. IEEE. 2010. S. 1−8.
  12. Magiera J., Katulski R. Accuracy of differential phase delay estimation for GPS spoofing detection // IEEE. 36th International Conference on Telecommunications and Signal Processing (TSP). 2013. P. 695−699.
  13. Davydenko A.S., Melikhova A.P. Povyshenie dostovernosti opredelenija koordinat po signalam globalnykh navigacionnykh sputnikovykh sistem putem prostranstvenno-vremennojj obrabotki signalov // Uspekhi sovremennojj radioehlektroniki. 2015. № 7.
  14. Melikhova A.P., Cikin I.A. Pelengacionnyjj metod kontrolja celostnosti polja globalnykh navigacionnykh sputnikovykh sistem/ Nauchno-tekhnicheskie vedomosti SPbGPU. Informatika. Telekommunikacii. Upravlenie. 2015. Vyp. 1(212). S. 29−38.
  15. Tsikin I.A., Melikhova A.P. Optimization of Angle-of-Arrival GPS Integrity Monitoring // Internet of Things, Smart Spaces and Next Generation Networks and Systems. Springer International Publishing. 2015. P. 722−728.
  16. Akimov P.S., Bakut P.A.Bogdanovich V.A. Teorija obnaruzhenija signalov / Pod red. P.A. Bakuta. M.: Radio i svjaz. 1984.


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