A real-time algorithm for broadband high-dynamic seismic data compression

A new real-time algorithm of data compression, including the segment-normalized logical compression and socalled "one taken from two samples",is presented for broadband high dynamic seismic recordings. This algorithm was tested by numerical simulation and data observed. Its results demonstrate that total errors in recovery data are less than 1% of original data in time domain,0.5% in frequency domain, when using these two methods together.Its compression ratio is greater than 3.The data compression softwares based on the algorithm have been used in the GDS-1000 portable broadband digital seismograph.