All terms used here are not needed for sending sms i have not done that type of project but what i can help with is
system image: it is hexadecimal file
boot image : it is normally a hexadecimal file
flashing : it is a process in which one want to change operating system,it is cpu specific ,commands used in this process is cpu specific, first boot image is send to device ,if boot is activated then system image is transferd and reset is done at end. you cannot create them unless you are cpu manufacturer or using cpu in your device manufacturing process.
operating system: only you have to deal with this for sending sms. for sending sms you have to cook application
ide will be chosen on factor operating system is used
rf chip : it is only a dumb chip with no brains (no cpu or memory) you have to attach this to some thing like raspberry pie or something i guess .
hardware : i guess you understand now
software : i guess ide in this case
kernel : why you need this ?
How android interacts with hardware to send SMS: a perfect example is your mobile phone, b4a can be used to send sms from mobile phone.
