Accession Number : ADA581362


Title :   Modeling Distributions of Non-Coherent Integration Sidelobes


Descriptive Note : Conference paper


Corporate Author : MITRE CORP MCLEAN VA


Personal Author(s) : Rushanan, Joe J ; Winters, David


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a581362.pdf


Report Date : Mar 2010


Pagination or Media Count : 47


Abstract : This paper considers the distribution of the cross-correlation sidelobes from intra-system GNSS interference after non-coherent integration. Because of the inherent periodic structure of the GNSS signals, the successive coherent integrations, while Gaussian distributed, are not independent. We model this dependence in the two separate cases of C/A and L5 signals. We then use the theory of Gaussian quadratic forms to specify the non-coherent integration distribution. Doppler and data bit combinations are shown to have an impact on the form of the distribution. Finally, we consider the special case of a single high-powered interferer. In this case, we use combinatorial reasoning to derive a distribution that is a mixture of all possible distributions for different values of the data bits.


Descriptors :   *SIDELOBES , COMBINATORIAL ANALYSIS , DISTRIBUTION , DOPPLER SYSTEMS , GLOBAL POSITIONING SYSTEM , IMPACT , INCOHERENCE , INTEGRATION , INTERFERENCE , MODELS , QUADRATIC EQUATIONS , REASONING , SIGNALS , SYMPOSIA , THEORY , VALUE


Subject Categories : Direction Finding


Distribution Statement : APPROVED FOR PUBLIC RELEASE