Signaalimõõdikuid

Signaalimõõdikuid, or signal metrics, are quantifiable measurements used to assess the performance and quality of signals in various systems, particularly in telecommunications, electronics, and signal processing. These metrics provide objective data that allows engineers and technicians to understand how well a signal is being transmitted, received, or processed.

Commonly used signal metrics include signal-to-noise ratio (SNR), which compares the power of the desired signal to the power of background noise. A higher SNR generally indicates a cleaner and more reliable signal. Another important metric is bit error rate (BER), which measures the number of bit errors in a transmitted data stream compared to the total number of bits transmitted. A low BER is crucial for accurate data communication.

Other signal metrics can include signal strength, measured in decibels (dB) or milliwatts (mW), indicating the amplitude or power of the signal. Frequency response describes how a system amplifies or attenuates signals at different frequencies. Distortion, such as total harmonic distortion (THD), quantifies the unwanted alteration of a signal's waveform.

The selection and analysis of signalimõõdikuid depend heavily on the specific application. For instance, in wireless communication, metrics like received signal strength indicator (RSSI) and channel quality indicator (CQI) are vital for optimizing network performance. In audio systems, THD and SNR are key indicators of sound quality. Understanding and monitoring these metrics are essential for troubleshooting, design optimization, and ensuring the reliable operation of signal-based systems.