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Viettel's S-125-VT Air Defense System Offers Extended Range and Dual Engagement in 20 Minutes.
The S-125-VT air defense missile system, modernized by Viettel, was showcased at the Vietnam International Defense Exhibition in 2024. Based on the S-125-M1 Pechora system, this upgraded version integrates technical improvements while retaining the original missiles, offering a solution tailored to the demands of modern air defense. With an extended range of over 20 kilometers and an accuracy rate of 90% against tactical targets such as aircraft, the S-125-VT represents a significant enhancement for Vietnam's military capabilities.
Unlike the standard version, which required over 90 minutes to become operational, the S-125-VT can be deployed or withdrawn in just 20 minutes, enabling rapid response to immediate threats
(Picture source: Army Recognition)
One of the most notable features of the S-125-VT is its ability to engage two missiles simultaneously at separate targets using an upgraded guidance system. This performance is complemented by enhanced reliability, even in environments with intense electronic warfare. The UNV-VT radar, the core of the system, has been extensively modernized to ensure effective surveillance with a maximum range of 90 kilometers. It can operate effectively under advanced electronic countermeasures, ensuring target detection and tracking in challenging conditions.
In addition to the radar, an electro-optical observation unit has been integrated to enhance the system's versatility. This technology enables the detection and locking of low-flying targets, even if the radar is fully neutralized. The combination of radar and electro-optical guidance addresses the challenges posed by modern electronic suppression techniques.
The UNK-VT control vehicle plays a central role in the system by coordinating all targeting and guidance operations. With improvements in processing algorithms, it provides precise real-time data for optimal efficiency. All components of the S-125-VT are mounted on mobile transport chassis, ensuring high flexibility and significantly reduced deployment time. Unlike the standard version, which required over 90 minutes to become operational, the S-125-VT can be deployed or withdrawn in just 20 minutes, enabling rapid response to immediate threats.
The UNV-VT radar, the core of the system, has been extensively modernized to ensure effective surveillance with a maximum range of 90 kilometers (Picture source: Army Recognition)
The system is powered by the dedicated PDU UNV-VT vehicle, equipped with two diesel generators rated at 40 kW each. This power unit provides over 24 hours of autonomous operation without refueling, with an average fuel consumption of 16 liters per hour. In addition to supplying power to the entire system, the vehicle includes climate control systems suited to local environmental conditions, ensuring the equipment functions reliably and operators remain comfortable.
The modernization also includes hydraulic mechanisms for the automated deployment and retraction of radar antennas, reducing operator workload and minimizing potential errors. The entire system is built on durable platforms suitable for rugged terrain, enhancing mobility and survivability on the battlefield.
Viettel’s modernization of the S-125-VT demonstrates its increasing expertise in defense technologies. This includes the development of advanced signal processing software, enhanced surveillance capabilities, and a system architecture designed to resist cyber threats. These advancements solidify Viettel’s position as a key player in Vietnam’s defense industry.
The S-125-VT embodies the efforts to adapt and upgrade Vietnam’s air defense systems to meet modern operational requirements. With its precision, capability to function in complex environments, and improved mobility, the system provides an effective response to contemporary threats. It represents a strategic enhancement for the Vietnam People's Army in addressing the growing challenges of aerial conflicts.