Методи нейромережевої класифікації сигналів із розширеним спектром у системах радіомоніторингу
Automatic classification of spread spectrum signals — frequency-hopping, direct-sequence, and chirp — is a key task in modern radio monitoring systems, particularly relevant for distributed sensor networks with constrained computational resources. A critical review of existing approaches shows that...
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| Опубліковано в: | Технологія та конструювання в електронній апаратурі |
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| Дата: | 2026 |
| Випуск: | 1 |
| Сторінки: | 38-44 |
| ISSN: | 3083-6549 |
| Автори та афіліації: |
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| Ключові слова: | радіомоніторинг, система обробки сигналу, common-mode noise, frequency and wave spectrum, класифікація радіочастотних сенсорів, transducer, формування сигнально-кодових послідовностей, radiometric receiver, обробка сигналів, методи аналізу сигналів |
| Автори: | , |
| Формат: | Стаття |
| Мова: | Українська |
| Опубліковано: |
PE "Politekhperiodika", Book and Journal Publishers
2026
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| Теми: | |
| Онлайн доступ: | https://www.tkea.com.ua/index.php/journal/article/view/TKEA2026.1.38 |
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| Назва журналу: | Technology and design in electronic equipment |
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Репозитарії
Technology and design in electronic equipment| Резюме: | Automatic classification of spread spectrum signals — frequency-hopping, direct-sequence, and chirp — is a key task in modern radio monitoring systems, particularly relevant for distributed sensor networks with constrained computational resources. A critical review of existing approaches shows that none of the three generations of classification methods — classical deterministic, feature-based machine learning, and deep learning on time-frequency representations — simultaneously meets three essential requirements: high accuracy at negative signal-to-noise ratios, computational complexity below 105 multiply–accumulate operations per realization, and compatibility with integer arithmetic for embedded deployment. This paper proposes a method that addresses this gap through a compact, informative feature vector combining frequency-domain, time-frequency, and statistical characteristics. The informativeness of Hjorth parameters is theoretically justified via their analytical link to spectral moments of the power spectral density, enabling O(N) time-domain computation equivalent to frequency-domain analysis. A formalized ablation analysis with three quantitative selection criteria (individual significance, pairwise correlation below 0.7, and absence of negative contribution) yields a reduced vector of five components. Complexity analysis confirms approximately 3·104 operations per realization and 2 kB model memory in integer configuration — four orders of magnitude less than convolutional network–based approaches. Experimental evaluation of a multilayer perceptron classifier demonstrates stable accuracy above 91% across a wide SNR range, 93.2% at 20 dB and 87% at −10 dB, with negligible degradation under integer quantization, confirming practical applicability to embedded and distributed radio monitoring systems. |
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| ISSN: | 3083-6549 |
| DOI: | 10.15222/TKEA2026.1.38 |