| 1. | At the same time , the fully using of digital map helped to scientifically set the location of shots and detectors , and the quality control was carried on in the distribution promptly to check up the cover frequencies of underground bin , azimuth and offsets to make sure the completeness of seismic data in city area ( burg , j . b , 1964 ; brown , a . r , 1992 ; sherff . w . c , 1990 )
同时，充分利用数字地图，科学地布设炮点和检波点，并及时地对城区内地下面元的覆盖次数、方位角和炮检距的分布进行质量监控，确保城区内地震资料的完整性( burg ， j b ， 1964 ； brown ， a r ， 1992 ； sherff |
