You only need general location data. The missile can do the final approach itself. It's hard to hide a strike group. Even civilians are tracking them these day

You only need general location data. The missile can do the final approach itself. It's hard to hide a strike group. Even civilians are tracking them these days with commercial sattelites: https://www.forbes.com/sites/hisutton/2020/05/07/the-realities-of-tracking-aircraft-carriers-with-civilian-satellites/ https://www.forbes.com/sites/hisutton/2020/05/07/the-realiti... US itself talks about sending out hundreds of cheapish drones in a swarm (5 km spacing) to seek out all naval assets over an area.