Secondary Surveillance Radar Response Channel Information Security Improvement Method

Svyd, Iryna; Обод, Іван; Maltsev, Oleksandr; Hlushchenko, Artem

doi:10.1109/dessert50317.2020.9125018

Cited by 15 publications

(2 citation statements)

References 21 publications

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“…Перетворюючи умови підсумовування величин, отримаємо ФП гіпотези 1 H для пачки декодованих сигналів, що приймаються, можливо записати у вигляді співвідношення Для реалізованого у вторинних радіолокаційних системах квазіоптимального виявлювача, що порівнює з порогом 1 с (9), загальне число дешифрованих СВ, також існує оптимальне значення порога, яке залежить від відношення сигнал/завада і величини P . Зі збільшенням співвідношення сигнал/завада і зниженням P оптимальне значення порога збільшується при підтримці постійної величини імовірності хибної тривоги вибором відповідного порога виявлення.…”

Section: вступunclassified

Comparative analysis of the quality of detection of air objects by secondary radar systems

Svyd

2023

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The work is devoted to a comparative analysis of the quality of detection of air objects by secondary radar systems. The purpose of the work is a comparative analysis of the optimal and quasi-optimal structure for detecting air objects by secondary interrogation radar systems. A significant role in the information support of the airspace control and air traffic control system is played by secondary radar systems for airspace surveillance, which include secondary radars and identification problems on the basis of “friend or foe” identification. Note that in existing networks of radar surveillance systems, tracking of airborne objects is usually carried out using information from primary radar surveillance systems, and secondary radar surveillance systems are used as sources of additional radar information. In this regard, the problems of assessing the quality of detection of air objects by secondary radar systems, the specifics of the construction and operation of which differ significantly from the primary airspace surveillance radar systems, are relevant. Thus, increasing the probabilistic characteristics of the system of secondary radar systems when an aircraft transponder operates in the field of significant flows of intentional and intra-system interference is ensured by choosing detection thresholds depending on the values of the transponder readiness coefficient and the probability of suppression of individual response signal pulses. On the other hand, the use of detection thresholds on secondary radar systems that are optimal for the given operating conditions of the transponder makes it possible to reduce the requirements for the throughput of the aircraft transponder with a significant intensity of flows of intra-system and intentional correlated interference. Analysis of the characteristics of detection of air objects by secondary radar systems shows that: optimal thresholds for detecting air objects in secondary radar systems significantly depend on the readiness factor of the aircraft transponder and the probability of suppression of individual pulses of response signals in the response channel; the use of decoding response signals and subsequent accumulation when choosing the optimal threshold significantly reduces the detection quality indicators compared to optimal processing of a burst of response signals; the digital threshold for detecting air objects in a secondary radar system largely depends on the probability of signal suppression in the request channel and response channel.

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Section: вступunclassified

Comparative analysis of the quality of detection of air objects by secondary radar systems

Svyd

2023

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“…Це обумовлено тим, що вторинні радіолокаційні системи [4,5] забезпечують як радіолокаційне спостереження за повітряними об'єктами, обладнаними літаковими літакового відповідачами [6], так і забезпечують двосторонню передачу інформації за каналами запиту та відповіді [7,8], тобто передачу інформації між повітряними об'єктами та наземними вторинними радіолокаційними станціями. До вторинних радіолокаційних систем відносяться вторинні оглядові радіолокатори [9][10][11][12] та системи ідентифікації за ознакою «свій-чужий» [13][14][15][16][17][18]. При цьому слід зазначити, що у теперішній час існують два принципу побудови зазначених інформаційних систем [19].…”

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Comparative analysis of noise immunity of the information transmission channel of secondary radar systems

Свид¹,

Vorgul

Starokozhev³

et al. 2022

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This paper presents the conducted assessment of noise immunity of the request signal transmission channel and response channel for flight information of secondary radar systems as part of aircraft responders. The considered system is an open single-channel queuing system with refusing due to the action in the request channel of intentional and unintentional correlated and uncorrelated (intra-system) interference and ground-based receivers that receive, process and decode flight information in the presence of fluctuation and intra-system interference in the receiving channel. The results of assessing the noise immunity of the aircraft responder in the form of the aircraft responder’s readiness factor under the action of internal and deliberate interference are given. It is shown that the principle of constructing an aircraft responder and the principle of servicing request signals and transmitting flight information do not allow ensuring acceptable probabilities of obtaining flight data at ground control points.

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Optimizing Airborne Object Detection of Secondary Surveillance Radar in Intra-System Interference Conditions

Svyd

Обод

Maltsev

et al. 2021

2021 IEEE 16th International Conference on the Experience of Designing and Application of CAD Systems (CADSM)

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Secondary Surveillance Radar Response Channel Information Security Improvement Method

Cited by 15 publications

References 21 publications

Comparative analysis of the quality of detection of air objects by secondary radar systems

Comparative analysis of the quality of detection of air objects by secondary radar systems

Comparative analysis of noise immunity of the information transmission channel of secondary radar systems

Optimizing Airborne Object Detection of Secondary Surveillance Radar in Intra-System Interference Conditions

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