ɪn nˈaɪntiːnhˈʌndɹɪd nˈaɪnti tˈuː hiː ɹᵻsˈiːvd ðə bɹˈɑːk ɡˈoʊld mˈɛdəl ɐwˈɔːɹd, ɐ pɹˈaɪz ðæt ɪz ɐwˈɔːɹdᵻd ˈɛvɹi fˈoːɹ jˈɪɹz baɪ ðɪ ˌɪntɚnˈæʃənəl səsˈaɪəɾi fɔːɹ fˌoʊɾoʊɡɹˈæmətɹi ænd ɹᵻmˈoʊt sˈɛnsɪŋ.
In 1992 he received the Brock Gold Medal Award, a prize that is awarded every four years by the International Society for Photogrammetry and Remote Sensing.