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针对USB(统一S频段)通信中副载波信号的功率分配问题,提出了一种载波功率分配策略,实现了副载波功率的最优分配,达到了提高功率效率的目的。结合某卫星副载波的特点,以应答机对副载波的检测门限为依据,对测控上行各副载波功率进行分配。计算结果表明,该载波功率分配策略在残留载波和遥控指令副载波的调制损耗上要优于传统常用调制度分配方法。该功率分配策略能够为卫星通信提供更佳的功率分配,使上行各种副载波信号能够达到卫星接收解调的最佳门限。
Aiming at the problem of power distribution of subcarrier signals in USB (Unified S-band) communication, a carrier power allocation strategy is proposed to achieve the optimal allocation of subcarrier power and achieve the purpose of improving power efficiency. Combined with the characteristics of a satellite subcarrier, the answering machine subcarrier detection threshold based on the measurement and control uplink subcarrier power allocation. The calculation results show that the power allocation strategy of the carrier is superior to the traditional modulation allocation method in the modulation loss of the residual carrier and the remote control subcarrier. The power allocation strategy can provide better power distribution for satellite communications and enable uplink subcarrier signals to reach the optimal threshold for satellite reception demodulation.