On behalf of the Multistatic PCL Focus Days organisation team, we are pleased to invite you to our fifth edition, which will take place in 17.-18. October 2023 in Wachtberg, which is located near the nice city Bonn, Germany. The 9th international Multistatic PCL Focus Days 2023 meeting will continue the idea of gathering world-class scientists, engineers and educators engaged in the fields of passive and bistatic radar.

The 2023 event aims to strongly reflect trends in sensor connectivity in a System-of-Systems (SoS) context. To this end, contributions such as sensor synchronization, Multi-Functional RF Systems, and RadarComms are welcomed. Moreover, Passive Radar knowhow is increasing in relevance for both System-of-Systems and new usecases. For example, Passive Radar on flying platforms is an important knowhow for several national and international defence projects. Similarly, Passive Radar based on new Illuminators-of-Opportunity, including megaconstellations like Starlink has many use cases from surveillance to diverse Remote Sensing applications. Enhancing air, ground, and maritime surveillance by passive radar or by a network comprising several radars is a demonstrated technique for numerous defence, security, and civilian surveillance applications. The objective of the 2023 event is to bring together the expertcommunity and the enduser community to share experiences and insights.

We look forward to seeing you in Bonn in October 2023.

D. W. O'Hagan, D. Cristallini, and M. Weiß