Ho tloha ho tloha lilemong tsa bo-1960 le mathoasong a bo-1970, litsamaiso tsa lipapali tsa theko ea sefofane li nketsoelitsoe ke sefofane le Aerospace Electro-aerospace le Elecaltrol Systems. Le ha lifoto tsa bonono tsa arial li sebetsa haholo-holo tsa moea tse bobebe, tse thehiloeng ho lifofane tsa moea li hlahisa lintlha tse bonahalang, tse hlahang, incral, incral libaka tse futhumetseng. Mekhoa ea moetlo ea pono ea pono ea lifoto tsa arial e ntse e thusa. Leha ho le joalo, ho ba le kelello e hole ka ho fapana le lits'ebetso tse eketsehileng tse kang mohlala o eketsehileng o kang mohlala oa thepa ea mahlaseli, le tlhahlobo ea litšoantšo tsa dijithal bakeng sa tlhahiso ea tlhaiso-leseling.
Ho khothaletsa hole, e bolelang likarolo tsohle tsa mekhoa e sa tsoakoang, ke mokhoa o sebelisang motlakase ebe o lekanya litšobotsi tsa bo-1950. Tšimo ea ho ba le kelello le 'mapa e hole, e arotsoe meketjaneng e 2 ea kelello: eo ho lemoha matla a hae ho e bonahatsa.