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2025, Vol: 32, Issue: 3
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Original Research 


Multi-baseline Emitter Location System: A Correlative Interferometer Approach

Usman Isyaku Bature, Nura Musa Tahir, Nasir Abubakar Yakub, Murtala Aminu Baba.


Abstract
Correlative interferometer is a type of radio direction finding (RDF) system that finds the angle of arrival of a signal through the correlation between the phase difference of the sample data and incident signal. To reduce the multipath issues of the RDF system based on correlation and baseline setup, a multiple baseline configuration of four sensors is proposed in this paper. In this proposed system, four sensors were properly spaced to minimized losses and establish a line of sight (LOS). Using the 2-dimensional approach the angle of arrival (AOA) of the signals received at various sensors is determined using the intersection of the hyperbolas produced by the receiving sensors and this corresponds to the true location of the emitter. Moreover, the phase differences of the received signal to the antenna array elements are computed and correlated with the values in the lookup table for the estimation of the AOA. The accuracy of estimation was found to be affected by the Geometry of the Sensor Units (GDOP), computational errors during the execution. Thus, this paper shows a method of minimizing multipath signal reception and noticed that the accuracy of the estimation could be enhanced if the geometry of the sensor units and computational errors were properly deliberated.

Key words: Emitter location, Least Square, Triangulation, Correlative Interferometry, Location estimation, Angle of Arrival


 
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How to Cite this Article
Pubmed Style

Bature UI, Tahir NM, Yakub NA, Baba MA. Multi-baseline Emitter Location System: A Correlative Interferometer Approach. NJE. 2020; 27(2): 92-98.

Web Style

Bature UI, Tahir NM, Yakub NA, Baba MA. Multi-baseline Emitter Location System: A Correlative Interferometer Approach. https://www.njeabu.com.ng/?mno=110663 [Access: June 22, 2026].

AMA (American Medical Association) Style

Bature UI, Tahir NM, Yakub NA, Baba MA. Multi-baseline Emitter Location System: A Correlative Interferometer Approach. NJE. 2020; 27(2): 92-98.


Vancouver/ICMJE Style

Bature UI, Tahir NM, Yakub NA, Baba MA. Multi-baseline Emitter Location System: A Correlative Interferometer Approach. NJE. (2020), [cited June 22, 2026]; 27(2): 92-98.


Harvard Style

Bature, U. I., Tahir, . N. M., Yakub, . N. A. & Baba, . M. A. (2020) Multi-baseline Emitter Location System: A Correlative Interferometer Approach. NJE, 27 (2), 92-98.


Turabian Style

Bature, Usman Isyaku, Nura Musa Tahir, Nasir Abubakar Yakub, and Murtala Aminu Baba. 2020. Multi-baseline Emitter Location System: A Correlative Interferometer Approach. Nigerian Journal of Engineering, 27 (2), 92-98.


Chicago Style

Bature, Usman Isyaku, Nura Musa Tahir, Nasir Abubakar Yakub, and Murtala Aminu Baba. "Multi-baseline Emitter Location System: A Correlative Interferometer Approach." Nigerian Journal of Engineering 27 (2020), 92-98.


MLA (The Modern Language Association) Style

Bature, Usman Isyaku, Nura Musa Tahir, Nasir Abubakar Yakub, and Murtala Aminu Baba. "Multi-baseline Emitter Location System: A Correlative Interferometer Approach." Nigerian Journal of Engineering 27.2 (2020), 92-98. Print.


APA (American Psychological Association) Style

Bature, U. I., Tahir, . N. M., Yakub, . N. A. & Baba, . M. A. (2020) Multi-baseline Emitter Location System: A Correlative Interferometer Approach. Nigerian Journal of Engineering, 27 (2), 92-98.


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