太阳能供电的传感器节点在电池充满电时会产生过剩的能量,如不加以利用会被浪费。提出一种基于太阳能约束的可靠数据传输方法 RDDMSC(Reliable Data Delivery Method based on Solar Constraint),利用过剩的能量自适应地调整通信中纠错...太阳能供电的传感器节点在电池充满电时会产生过剩的能量,如不加以利用会被浪费。提出一种基于太阳能约束的可靠数据传输方法 RDDMSC(Reliable Data Delivery Method based on Solar Constraint),利用过剩的能量自适应地调整通信中纠错码的冗余度,在网络寿命保持不变的情况下提高传输的可靠性。将问题描述为在有能量约束时最大限度地保证端到端数据包的传输率。证明了在链路质量不差的情况下目标函数一定是凹函数,进而采用凸优化来解决可靠传输问题。实验结果表明,RDDMSC能够有效地使用过剩能量来能够提高数据传输率。展开更多
The current advances of the solar sensor techniques are over reviewed. The amorphous material preparation, design and fabricating method, structure and performances, and experimental results of the amorphous silicon s...The current advances of the solar sensor techniques are over reviewed. The amorphous material preparation, design and fabricating method, structure and performances, and experimental results of the amorphous silicon solar sensors are described.展开更多
Based on the first type of Rayleigh Sommerfeld diffraction formula, an imaging model of circular aperture-array structure digital sun sensor optical system is developed. Then a 6×6 circular aperture-array structu...Based on the first type of Rayleigh Sommerfeld diffraction formula, an imaging model of circular aperture-array structure digital sun sensor optical system is developed. Then a 6×6 circular aperture-array structure optical system is designed. The results of numerical simulation show that the optical system is designed well and is conformed to the requirements of miniaturization and high accuracy of sun sensor.展开更多
文摘太阳能供电的传感器节点在电池充满电时会产生过剩的能量,如不加以利用会被浪费。提出一种基于太阳能约束的可靠数据传输方法 RDDMSC(Reliable Data Delivery Method based on Solar Constraint),利用过剩的能量自适应地调整通信中纠错码的冗余度,在网络寿命保持不变的情况下提高传输的可靠性。将问题描述为在有能量约束时最大限度地保证端到端数据包的传输率。证明了在链路质量不差的情况下目标函数一定是凹函数,进而采用凸优化来解决可靠传输问题。实验结果表明,RDDMSC能够有效地使用过剩能量来能够提高数据传输率。
文摘The current advances of the solar sensor techniques are over reviewed. The amorphous material preparation, design and fabricating method, structure and performances, and experimental results of the amorphous silicon solar sensors are described.
基金This work was supported by Advanced Research of Civil Aero-space Foundation of National 10th and 11th Five-Year Plan
文摘Based on the first type of Rayleigh Sommerfeld diffraction formula, an imaging model of circular aperture-array structure digital sun sensor optical system is developed. Then a 6×6 circular aperture-array structure optical system is designed. The results of numerical simulation show that the optical system is designed well and is conformed to the requirements of miniaturization and high accuracy of sun sensor.
