jgg     2009 29 (1):  88-90    ISSN: 0412-1961  CN: 21-1139/TG RESEARCH OF IMPROVED FICTIOUS COMPRESS RECOVERY APPROACH FOR APPROXIMATING LOCALLY DISTURBING GRAVITY Zhou Shichang; Wang Qingbin ;and Zhu Leiming Institute of Surveying and Mapping, Information Engineering University, Zhengzhou 450052 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null