In the forties there used to be a piece of kit in Air Traffic called a 'Porka'.
the modern version is the WRAF assistant but spelled with an er at the end
DF homing to the overhead was always available if the instrument approaches weren't available and the same concept was used for emergency letdowns in the AAC where the troops on the ground would listen out for the aircraft in the overhead and transmit to the aircraft - a timed turn teardrop procedure would then be executed to let down to the 'overhead' on a 'safe' heading. Not very precise but it could work well if the terrain was suitable.