用于低轨卫星扩频通信系统的高动态快捕算法
徐兆斌,谢志强,袁新博,金小军,金仲和

High dynamic fast acquisition algorithm for low orbit satellite spread spectrum communication system
Zhaobin XU,Zhiqiang XIE,Xinbo YUAN,Xiaojun JIN,Zhonghe JIN
表 1 扩频通信系统的参数
Tab.1 Parameter of spread spectrum communication system
参数数值参数数值
${n_{\mathrm{B}}}$2${\text{DO}}{{\text{P}}_{\text{R}}}/{\mathrm{kHz}}$$ \pm 70$
${\text{p}}{{\text{n}}_{\text{r}}}/{\mathrm{MHz}}$$6.138$$T/{\mathrm{s}}$$ < 0.8$
${n_{\mathrm{F}}}$$1\;024$${P_{{\mathrm{FA}}}}$$ < {10^{ - 4}}$
$V$$512$${P_{{\mathrm{FD}}}}$$ < {10^{ - 2}}$
${\text{FF}}{{\text{T}}_{{\text{NUM}}}}$$11$$\delta ({f_{\mathrm{e}}})/{\mathrm{dB}}$$ < 2$
$(0.5{T_{\mathrm{h}}}\sigma _{\mathrm{n}}^{-2})/{\mathrm{dB}}$$13.9$${\text{SNR}}/{\mathrm{dB}}$$ > 16$
${\text{FF}}{{\text{T}}_{\text{R}}}/{\mathrm{Hz}}$$1\;360$${P_{\min }}/{\mathrm{dBm}}$$ > - 136.34$
${f_{\mathrm{D}}}/{\mathrm{(kbit·s^{-1})}}$$1.0\sim 2.0$$H/{\mathrm{km}}$490
${f_{\mathrm{B}}}$S-Band