CAJ | 학술논문

为了研究遥感图像在传输的过程中可能产生误码,对编码及图像传输系统进行了改进.从无线通信系统的传输机制出发,分别使用滤波器法和正弦函数相加法对传输信道进行模拟,产生出相应的传输误码,并通过仿真结果对误码传输方案进行比较.应用该误码产生方案可以对JPEG和SPIHT编码的图像在传输信道中的抗误码能力进行评估.实验结果证明误码产生方案的可行性,找出了更适合COST207规定乡村条件下传输的编码方案.
위료연구요감도상재전수적과정중가능산생오마,대편마급도상전수계통진행료개진.종무선통신계통적전수궤제출발,분별사용려파기법화정현함수상가법대전수신도진행모의,산생출상응적전수오마,병통과방진결과대오마전수방안진행비교.응용해오마산생방안가이대JPEG화SPIHT편마적도상재전수신도중적항오마능력진행평고.실험결과증명오마산생방안적가행성,조출료경괄합COST207규정향촌조건하전수적편마방안.
For researching the bit error in the remote sensing image transmission and improving the image transmission systems, a bit error generator was designed. According to the wireless transmission mechanism and the standard COST207, a novel descriptive model was proposed for bit error generation. Moreover, two general methods, Filter Method and Sum of Sinusoid ( SoS) Method, were applied to simulate the transmission channels. Based on the bit error generator, two image compress schemes, SPIHT and JPEG2000 were used to evaluate its performance in transmission with bit error. The results of simulation show that Filter Method and SoS Method are of equivalent efficiency to generate bit error. The comparison between the transmitted images shows that SPIHT can be better for transmission in Rural Area (RA) environment according to COST207.