Hello Dear

Yeah definitely since you are from an ECE domain you can definitely be able to take the admission in DRDO. Since DRDO is an elite goverment institutes which will recruit the candidate's from ECE / E&I / Electrical / Electronics domain . So definitely you have the better scope in that. For taking the job in DRDO either you should write the GATE entrance exam or the respective exam which the DRDO will conduct for the recruitment of candidates.

All the best