About: http://webisa.webdatacommons.org/91458864

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	In this figure, r(t) represents a received signal, i.e. a signal received by a photoelectric receiver.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com