Assessment of the localization error of radio-acoustic bug devices by means of acoustic distance measurement
DOI:
https://doi.org/10.30837/rt.2024.1.216.06Keywords:
radio-acoustic bugs, localization, hardware and software complex, range measurement error, fixation of time position, correlation methodAbstract
Localization of a radio-acoustic bug device (RABD) is the determination of its location in space. Localization of the RABD can be carried out both by the electromagnetic field and by using acoustic probing signals.
Localization using acoustic probing signals is carried out using an acoustic rangefinder (AR) as part of a hardware-software complex (HSC) for detecting RABD (for example, the «ORT», «VOSTOK» hardware systems developed at KNURE). The operating principle of AR is given in the article.
The error in measuring the coordinates of the RABD with an acoustic rangefinder consists of instrumental and random errors in measuring the range, as well as the methodological error in determining the location of the RABD, which is due to the peculiarities of the rangefinder method of determining coordinates.
The article addresses the issue of minimizing the error in measuring the range of a bug device with an uncertainty of location by analyzing various methods for fixing the temporary position of an acoustic signal in real conditions for detecting radio-acoustic embedded devices in designated premises.
The advantages and disadvantages of various methods for fixing the time position of an acoustic signal along one of the pulse fronts are analyzed simultaneously on the leading and falling edges of the pulse, at the position of the maximum signal values and using the correlation method of fixing the time position of the signal in relation to the localization of radio-acoustic bug devices in real conditions. The results of mathematical modeling and experimental research using the HSC “VOSTOK” of the error in determining the range to a radio-acoustic bug device are presented.
It has been established that when localizing bug devices using an acoustic range finder, it is advisable to use the correlation method of fixing the time position of pulses. At the same time, there is a decrease in the standard deviation of the localization error compared to the threshold method by 15% in the range of s/n values from 2 to 20, high stability of the results and low sensitivity to changes in the amplitude of the received signal.
References
Sathyamoorthy D., Jalis M., Md Jelas, Shalini Shafii. Wireless spy devices // A review of technologies and detection methods. November Defence S and T Technical Bulletin 7(2). 2014. 130–139 р. (https://www.researchgate.net/publication/267751871)
Пошук та локалізація радіозакладних пристроїв / В.О.Хорошко, О.Д.Азаров, Г.О.Максименко, Ю.Є.Яремчук. Вінниця : ВНТУ, 2007. 333 с.
Олейніков А.М., Коваль В.П. Особливості застосування апаратно-програмних комплексів для виявлення та локалізації закладних пристроїв // Захист інформації. Київ, 2002. N 3. C.28–36.
Засоби та системи технічного захисту інформації / І.Є. Антіпов, А.М. Олейніков, Ю.В. Ликов, В.Д. Кукуш, І.О. Милютченко. Харків : ХНУРЕ, 2019. 216 с.
Мітяшов Б.М. Визначення часового положення імпульсів за наявності перешкод. Москва : Рад. радіо, 1962. 200 с.
Downloads
Published
How to Cite
Issue
Section
License
Authors who publish with this journal agree to the following terms:
1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).