Question: German fire-and-forget guidance systems for Rotkäppchen X7

[le max]

I recently found out that the germans manufactured and tested IR beam (Steinbock) and TV guided (Pfeifenkopf and Pinsel) systems in the Rotkappchen X7 an other anti air missiles, all of this technology based on the work made by Manfred von Ardenne. But is there more information about this?, it was really tested?, are there any specifications or drawing plans related to this, apart from the fact that the Idea and the names were there?

Sources:
Guidance systems (in german): https://www.luftarchiv.de/index.htm?/flugkorper/x7.htm

Manfred von Ardenne: https://en.wikipedia.org/wiki/Manfred_von_Ardenne

German page: "Other test versions were equipped with the "Steinbock" automatic infrared guidance system and the "Pfeifenkopf" and "Brush" electro-optical guidance systems. The latter used vidicon cameras to detect the difference between the target and the background. Various flight guidance systems were tested, both for anti-aircraft and anti-tank purposes."

 

[Basil]

So this would have been a form of saclos guidance which was not introduced for anti tank missiles before the 1960s. Some years ago I read in an article (do not rememer the source) that saclos guidance was also intended to implement into the X4 air-air missile as a further development step.