Design and Implementation of Spacecraft Onboard Network Based on LWIP

A spacecraft onboard network connects all devices on a spacecraft together. State-of-the-art spacecraft onboard networks have several problems to support modern spacecraft applications. In this paper, we design and implement a spacecraft onboard network based on the LWIP protocol stack to solve these problems. We introduce the design of the protocol stack and the network system, and introduce the detail of integrating LWIP protocols with existing spacecraft software such as VxWorks and using LWIP protocols in spacecraft applications.