If by probe you mean unmanned vehicles, its a multidisciplinary field. A mechatronics degree would be a good preparation for this. But few universities have a bachelors degree in mechatronics. And in any case you would need a masters if you want to do anything serious. While you might be able to enter a masters program in mechatronics with a comp science bachelors, you are likely to find the program difficult. As computer science is mainly math and software. I would suggest you enroll in a computer engineering program, in which you also learn about electronics. Other good majors for unmanned vehicles would be electrical and mechanical engineering. I've seen 2-3 universities that offer a bachelors in integrated engineering and honestly, I don't think those programs are worth it. I don't think their are any integrated engineering masters.
More importantly, you would want to find a professor who researches in this area and work under him for your masters, at this point it does not matter much which department he belongs to.
I am a mechanical engineering major (minor in computer engineering) working on an unmanned aircraft for my final year project. I am leading the controls part of the team, which has another mechanical engineer and two electrical engineers. While four of my buddies from mechanical engineering are actually designing and fabricating the aircraft, i.e. the fuselage, wings, tail, landing gear, etc. So you can see its not just one type of engineer that's required.
For controls, you need to know about embedded systems(taught in computer engineering), controls systems(mainly electrical engineering but mechanical engineers also study a good part of it) and dynamic systems(mechanics). There's also a lot of electrical engineering i.e. radio communication & onboard camera, but in our project we have that ready made. The ground station is also very important, basically software on a laptop using which you monitor the aircraft and command it, having a comp sci or comp eng. major would be ideal for this.
Its a good idea to study at a virtual university of you bachelors as it would cost less, but you need a lot of lab experience aswell. Once you are done with your bachelors you would figure out exactly what do you want to concentrate on in your masters.