As satellite navigation applications become increasingly widespread, many device manufacturers and end users are facing a real-world challenge: with the electromagnetic environment growing ever more complex, the risk of navigation signal loss, positioning drift, and even complete signal interruption is on the rise. For drones, mobile vehicles, and various unmanned platforms, this is not merely a user experience issue; it directly impacts flight safety, mission execution efficiency, and operating costs. How to maintain stable and reliable positioning and timing services in environments where signal interference is widespread has become a critical issue the industry must address.
The 4 Elements Anti-Jamming Terminal (SH-K130) is a proven solution designed specifically to address this need. It covers four mainstream navigation frequencies-BDS B1, GPS L1, GLO G1, and GAL E1-and is designed from its hardware architecture to its algorithmic processing with real-world operational scenarios in mind, aiming to provide a practical solution for ensuring navigation reliability in complex electromagnetic environments. So, from a practical standpoint, what are the key factors to consider when evaluating whether an anti-jamming solution is truly effective? And how do these factors play out in real-world operational scenarios? Let's take the 4 Elements Anti-Jamming Terminal (hereinafter referred to as the SH-K130) as an example to explore this further.
Quick recovery capability is a key metric for ensuring continuous operations
In environments with interference, once a navigation signal is lost, the biggest headache for operators is often not the momentary loss itself, but the lengthy wait that follows while the system reacquires the signal. For unmanned platforms performing inspection, mapping, or transport missions, every second spent in a signal blind spot can lead to a deviation from the flight path, an interruption in data collection, or even trigger safety protection mechanisms that force the platform to return to base or land.
Therefore, the reacquisition time metric directly determines the continuity of operations. The SH-K130 keeps reacquisition time within 6 seconds, meaning that even in the event of brief, intense interference, the system can automatically resume positioning within a very short time, minimizing the impact of operational interruptions. Meanwhile, its cold start time does not exceed 60 seconds (including self-tests), which means that the speed at which the device transitions from power-on to operational status has been specifically optimized to quickly respond to on-site deployment needs. This ability to recover and boot up quickly is no accident; it relies on the close coordination of time-frequency joint search strategies and signal synchronization mechanisms, and is the result of repeated fine-tuning at both the hardware architecture and algorithm levels. For industry users seeking high efficiency and low risk, these specifications translate into tangible operational reliability.
Positioning and speed measurement accuracy are the most direct indicators of interference suppression performance
No matter how effective the anti-interference measures are, it ultimately comes down to one core issue: Are the position and speed reported by the terminal accurate? If interference suppression comes at the expense of accuracy, that cost may be too high for many application scenarios.
Supported by effective interference suppression technology, the terminal must still extract a sufficiently clean signal from noise and interference for position calculation. The SH-K130 maintains positioning accuracy within 10 meters and speed accuracy better than 0.2 meters per second, meaning that even in complex electromagnetic environments, users can still obtain reliable position and speed information. This level of accuracy is made possible by two-dimensional space-time adaptive processing technology, which identifies and suppresses interference simultaneously in both the spatial and temporal dimensions, thereby ensuring the reliability of the calculation results. For systems that rely on navigation data to make decisions, the consistent performance of this metric serves as the foundation for all subsequent actions.
RF front-end performance is the fundamental factor that determines the upper limit of interference suppression
People often focus on anti-interference algorithms but tend to overlook one fact: if the RF front end itself is of subpar quality, even the most advanced algorithms will struggle to perform as intended. The SH-K130 features several noteworthy hardware design elements in this regard. First, the channel noise figure is kept below 1.7 dB. A low noise figure ensures that the useful signal retains a high degree of integrity before entering the processing stage, which provides greater processing headroom for subsequent anti-interference algorithms. Second, the antenna array's burn-out resistance is no less than 2W. While this specification may seem unremarkable, it is highly practical in real-world deployments. When a terminal is unexpectedly exposed to high-power signals, an antenna with burn-out resistance can effectively reduce the risk of hardware damage, thereby minimizing the need for equipment replacement and downtime caused by such incidents. In addition, the device supports four frequency bands: BDS B1 (1561.098 MHz ± 2.046 MHz), GPS L1 (1575.42 MHz ± 1.023 MHz), GLO G1 (1601.5 MHz ± 8.5 MHz), and GAL E1 (1575.42 MHz ± 12.276 MHz). These four frequency bands cover the current mainstream global navigation satellite system frequencies, ensuring the terminal's universal compatibility.
Power consumption and reliability are the foundation for the long-term, stable operation of the solution
Power consumption and reliability are often the two key factors that customers focus on most when selecting a product, as they directly affect whether the device can operate stably and continuously throughout the project lifecycle. The SH-K130 controls total power consumption to within 12W while simultaneously suppressing three broadband interference sources. For battery-powered UAV platforms, this power consumption level translates to longer flight times, while for vehicle- and aircraft-mounted platforms, it means reduced power supply demands and lower thermal management requirements.
In terms of reliability, the SH-K130 has a mean time between failures (MTBF) of no less than 5,000 hours. The significance of this figure lies in the clear message it conveys to users: this solution was designed from the outset to meet the demands of long-term operation, rather than merely pursuing performance in a laboratory environment. With an operating temperature range of -40°C to +70°C and a storage temperature range extending from -45°C to +85°C, the device's ability to adapt to a wide temperature range-from extreme cold to high heat-enables it to perform reliably in a variety of outdoor operating environments.
Simultaneously handling multiple broadband interferences is the key to enabling applications in complex scenarios
In real-world environments, interference is rarely a one-on-one situation; more often than not, it involves a complex scenario where multiple interference signals coexist. Therefore, a mature and reliable anti-interference solution must be capable of simultaneously handling multiple broadband interference sources.
The SH-K130 can effectively suppress three broadband interference sources simultaneously, meaning that the terminal can maintain an effective reception channel for navigation signals even when faced with various types and directions of jamming interference. This capability is made possible by the seamless integration of a four-frequency (B1/L1/G1/E1) antenna array with a space-time adaptive algorithm.
For equipment manufacturers and end users, selecting an anti-jamming solution is essentially a long-term investment in the continuity and reliability of their operations. The SH-K130 delivers proven performance across multiple key dimensions-from its low-noise and burn-out-resistant RF front-end design, to its space-time adaptive jamming suppression algorithm, and its engineering implementation for wide-temperature-range and low-power operation. If you are seeking a stable and reliable anti-jamming navigation solution for drones, vehicles, or unmanned platforms, or if you would like to learn more about the performance and integration details of the 4 Elements Anti-Jamming Terminal (SH-K130) in real-world deployments, please feel free to contact us at any time. Our technical team can provide tailored product documentation and application recommendations to help you assess how well the solution aligns with your specific needs.
Our Email: info@satgroundapplication.com, or contact us.
