A Real-Time Radar Video Data Compression Algorithm Based on Lifting Wavelet Transform
YU Wen-xian · Dianzi xuebao · 2005
High-quality and real-time processing are two important requirements for the compression of large radar video data set.However,the existed high-quality compression algorithms are too complex and time-consuming for the real-time processing.Some algorithms implemented by hardware can meet the real-time processing requirement,but their compression quality is low and the compression ratio can't be adjusted.In this paper,the characteristic that radar video data has strong correlation and short correlation length is obtained by analyzing actual radar data.Then a low-complex and high-quality compression algorithm is proposed based on lifting wavelet transform with length 5-3 and Golomb-Rice coder.The computational complexity of the algorithm is analyzed in detail.Experiment shows that the software implementation of the algorithm can meet the requirements of real-time radar video data compression.Finally,the algorithm has been successfully utilized in a record system of coastal surveillance radar.