Browsing by Author "Nyokabi, Veronicah"

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Cramer-Rao Bound of Direction Finding Using Uniform Arc Arrays
    (2019) Nyokabi, Veronicah; Kitavi, Dominic M.; Ngari, Cyrus G.
    Direction-of-Arrival estimation accuracy using arc array geometry is considered in this paper. There is a scanty use of Uniform Arc Array (UAA) in conjunction with Cram er-Rao bound (CRB) for Direction-of-Arrival estimation. This paper proposed to use Uniform Arc Array formed from a considered Uniform Circular Array (UCA) in conjunction with CRB for Direction-of-Arrival estimation. This Uniform Arc Array is obtained by squeezing all sensors on the Uniform Circular Array circumference uniformly onto the Arc Array. Cram er-Rao bounds for the Uniform Arc Array and that of the Uniform Circular Array are derived. Comparison of performance of the Uniform Circular Array and Uniform Arc Array is done. It was observed that Uniform Arc Array has better estimation accuracy as compared to Uniform Circular Array when number of sensors equals four and ve and azimuth angle ranging between π 9 7 and π and also 18 10 9 π and 25 18π. However, UCA and UAA have equal performance when the number of sensors equals three and the azimuth angle ranging between 0 and 2π. UCA has better estimation accuracy as compared to UAA when the number of sensors equals four and ve and the azimuth angle ranging between π 2 and π and also 32 π and 2π
  • Thumbnail Image
    Item
    Staff Profile: Nyokabi Veronicah
    (University of Embu, 2020-01) Nyokabi, Veronicah
    Veronicah Nyokabi is a Graduate Assistant at University of Embu since January 2017, currently pursuing an MSc in Applied Mathematics. She has attained a Bachelors’ Degree at University of Embu in Mathematics and Physics. Research Interests: Applied Mathematics