multipathartefakter

Multipathartefakte refers to spurious signals or distortions that appear in data processing, particularly in fields like radio communication, radar, and medical imaging. These artifacts arise when a signal travels along multiple paths from a source to a receiver before being detected. Each path can have a different length, causing the signal components to arrive at different times. When these delayed signals combine with the directly received signal, they can interfere constructively or destructively, leading to a distorted representation of the original signal.

In wireless communication, multipath propagation is common in urban environments due to reflections from buildings and other obstacles. This can result in fading, where the signal strength fluctuates, and inter-symbol interference (ISI), where previous symbols corrupt subsequent ones. Similarly, in radar systems, reflections from multiple surfaces can create ghost targets or clutter. In medical imaging modalities like ultrasound, reflections from tissue boundaries can also lead to artifacts that obscure or misrepresent anatomical structures. Understanding and mitigating multipathartefakte is crucial for accurate signal interpretation and reliable system performance. Techniques such as equalization, diversity combining, and advanced signal processing algorithms are employed to reduce their impact.