SDIR refers to the state that the value of software in a vehicle which exceeds that of the mechanical hardware: a radar sensor unit.
This reflecst the digital transformation of vehicles from rigid(fixed performance) machines to expandable mobile electronics that can be continuously upgraded by OTA: over the air.
To become such intelligent sensor, the structure is pre-embedded with advanced hardware before standard operating procedures (SOP)
SRS supports the SDIR structure which is pre-embedded with advanced hardware that OEMs/Tier-1s can apply their fresh algorithm via OTA.