29 Feb, 2024
Author: Cherry Shen
Spectrum analyzer, also known as signal analyzer, are devices that can graphically represent radio frequency signals and help us understand the properties and types of signals in order to deduce the modulation type and type of transmitter. In the military field, spectrum analyzers are widely used in electronic countermeasures and spectrum monitoring, and various radar signals, communication radio signals, repeater signals, and “friend or foe” identifier signals have specific spectrum characteristics.
In the field of civilian radio management, spectrum diagrams can be used to quickly detect illegally used frequencies, which is more efficient than traditional scanning monitoring. In the positioning of unknown interference sources, spectrum diagrams can help us determine the type of interference signals and infer the possible equipment that generates interference signals, so as to narrow down the scope of investigation. In addition, spectrum analyzer can also play the role of field strength meters, with a large dynamic range. Some spectrum analyzers with automatic measurement functions can conveniently obtain the field strength values of target signals and display the surrounding situation of the target frequency. In practical applications, many handheld spectrum analyzers have replaced traditional field strength meters.
Spectrum analyzers are widely used in the field of radio frequency. Its main function is to detect and measure the amplitude of signals. Spectrum analyzer display radio frequency signals in the set frequency range in a graphical format, and the stronger the signal, the greater the amplitude displayed by the instrument. Therefore, spectrum analyzers have been widely used in the monitoring of electromagnetic environment, wireless spectrum monitoring, electromagnetic compatibility measurement of electronic products, transmission characteristics of radio transmitters, output signal quality of signal sources, and counter wireless theft etc.
Spectrum analyzers can measure various characteristics parameters of radio frequency signals, including frequency, frequency selection power, bandwidth, adjacent channel power, modulation waveform, field strength and so on. Especially in the frequency measurement, spectrum analyzers have unique advantages. For some special signals, such as time division multiplexing signals (such as GSM mobile phone, IDEN, TETRA signals), hopping signals and broadband signals, traditional frequency counters cannot accurately count, and power meters cannot measure in time. But the spectrum analyzer based on high-speed signal capture can effectively measure these signals. In order to meet the needs of users, many mid-high-end spectrum analyzers also provide special measurement software and automatic measurement tools to facilitate users’ spectrum analysis and measurement.
Spectrum analyzers are used for a variety of tasks, including testing and troubleshooting radios, antennas, and communications systems; analyzing and detecting radio frequency interference; and researching and designing new communications systems. They are also used in signal processing applications, such as searching for weak signals in a noisy environment, and measuring signal-to-noise ratios.
To sum up, spectrum analyzer are widely used in the field of radio frequency. Through the above introduction, we can understand the importance and wide application range of spectrum analyzers. It can not only support electronic countermeasures and spectrum monitoring in the military field, but also play an important role in civilian radio management and interference source inspection. Equipped with the function of discovering and measuring various parameters of radio frequency signals, spectrum analyzers have become one of the essential tools in the field of electronics through advanced technology and optimized software.
Tags：Tags： SPA-3P6G
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