format error
4.Based on many years research and practice, we propose in this paper the concept of equivlent page byte error rate (EPBER) by analysis of page format and error correct coding of data broadcasting. By using EPBER, the judge error rate of vertical parity and CRC 16 error check codes are analysed quantitatively, and the improvement of page fail rate by over writing function and optimum strategy for the receiver are expounded.
6.Firstly, the thesis expounds the compressing and encoding technology of the video & audio in MPEG-1 standard, and discusses the format of MPEG-1 data, and the way of error-rectifying on digital disc playing system.
8.Through analyzing the current status of forest resources foundation geographical data in Fujian Province, the data error sources was analyzed, and key technologies, such as the data standardization, the data reorganization, the error correction, the vector precision rectification, the process of date format unification and transformation, were discussed.
10.This paper analyzes the error source in data collected by GPS,introduces the assessment and correcting method for data quality. At last this paper gives an example to illustrate how to convert primitive data of electric pole collected by GPS into electric wire data format,which can be used by GIS with topological structure pole format.
