Real-Time Capable Micro-Doppler Signature Decomposition of Walking Human Limbs
This work addresses real-time human motion detection and classification for safety applications, but it appears incremental as it builds on existing methods for signature decomposition.
The paper tackled the problem of decomposing micro-Doppler signatures of walking human limbs in real-time by combining simulation methods and using a decision tree classifier based on features like micro-Doppler and micro-Range, achieving validation for real-time decomposition.
Unique micro-Doppler signature ($\boldsymbolμ$-D) of a human body motion can be analyzed as the superposition of different body parts $\boldsymbolμ$-D signatures. Extraction of human limbs $\boldsymbolμ$-D signatures in real-time can be used to detect, classify and track human motion especially for safety application. In this paper, two methods are combined to simulate $\boldsymbolμ$-D signatures of a walking human. Furthermore, a novel limbs $μ$-D signature time independent decomposition feasibility study is presented based on features as $μ$-D signatures and range profiles also known as micro-Range ($μ$-R). Walking human body parts can be divided into four classes (base, arms, legs, feet) and a decision tree classifier is used. Validation is done and the classifier is able to decompose $μ$-D signatures of limbs from a walking human signature on real-time basis.