Questions on Satellites in combat

I have question on satellites in combat. Satellites mainly radar, infrared, and visual are the ones used for military tracking. GPS guided weapons like the JDAM and Tomahawk are used by what type? Also, can satellites lock on to a target like a aircraft carrier and guide a ballistic missile with midcourse updates to home in on a target even at terminal phase? If its a visual satellite it cannot be jammed other than its datalink correct?

Also in the future can sattelites get super sensitive they can track entire oceans and strips of land and even perhaps stealth aircraft?