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Epsilon4@20190115, JAXA #10

Open NirViaje opened 5 years ago

NirViaje commented 5 years ago

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Basic information

The payloads are

Total payload mass is 386 kg.

Launch info

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NirViaje commented 5 years ago

RAPIS-1

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Deep Learning Attitude Sensor (DLAS)

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According to the public release, the Deep Learning Attitude Sensor (DLAS) was developed with three goals in mind:

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  1. CNN has a multiple convolution layer, which increase the processing time.
  2. Since 16 × 16 pixel window does not have much information, it does not make much difference between MLP and CNN.
  3. In our DLAS project, we plan to perform relearning after acquiring the images took from the satellite. Therefore, we must be careful with the number of weights (parameter) in the network. The fewer parameter it becomes, the less command we needed.

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NEC Nano Bridge FPGA, NBFPGA

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NEC和高级工业科学和技术的国家研究和发展研究所(以下简称AIST)是一个开放创新基地TIA(其如AIST促进注1的杠杆),向空间中的LSI使用,优良的抗辐射性我们开发了FPGA(NB-FPGA)(注2),配备了NEC专有的金属原子移动开关“NanoBridge(R)”技术。

当在诸如人造卫星的空间环境中使用当前的FPGA(SRAM型FPGA,注释3)时,存在由于辐射的影响而发生的写入SRAM中的电路信息改变的问题。同时,NanoBridge将传统FPGA的电源效率提高了10倍,并具有出色的抗辐射能力。

这次NEC与日本国家航空航天研究开发机构(JAXA)合作,利用NB-FPGA开发了在地面恶劣辐射环境下的运行。结果,我确认NanoBridge开/关在放射线照射前后没有​​变化。因此NEC预测了纳米桥相比SRAM可以辐射到1/100或更小的误差发生频率,我们相信我们可以实现LSI同时实现高的抗辐射性和超低功耗。

NB-FPGA利用NEDO的结果“超低电压器件项目实现低碳社会”时,纳米桥的构成材料包括使用所述半导体制造装置TIA的固体电解质材料(图1), NEC和AIST联合开发了它。NB-FPGA是TIA开放式创新的成就之一。

NEC和JAXA将计划通过在2003财政年度推出的“创新卫星技术示范单位1”中安装NB-FPGA来验证实用性和可靠性。

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NanoBridge利用固体电解质中形成的金属(铜)原子的交联来打开和关闭信号(图1)。即使电压关闭,也会保持开/关状态。由于NanoBridge的金属原子的交联不受辐射发生时产生的电荷的影响,即使在辐射发生的空间环境中,重写NB-FPGA电路的可能性也非常低,实现了高可靠性我会的。

用于该评估的NB-FPGA的特征如下。

通过采用传统FPGA中用于电路系统的4输入LUT(注5),提高了兼容性和易用性。8,000个LUT安装在64×64单元的芯片上。(在太空现场演示实验中,NB-FPGA中安装了3.7千个图像压缩处理所需的LUT。) 通过使NanoBridge开关3端子结构* 6,提高了OFF状态的开关的可靠性。一个NB-FPGA包含多达5100万个开关,用于信号切换和LUT存储器。

image image image https://qiita.com/cagalliorb/items/791e84ef0ec6940e1eee

軽量太陽電池パドル機構 TMSAP

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NirViaje commented 5 years ago

OrigamiSat-1

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ORganizatIon of research Group on Advanced deployable Membrane structures for Innovative space science Project

坂本

中西

坂本

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宇宙大型構造物構築の時代を見据え 多機能薄膜の展開技術を宇宙で実証

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image http://fanfun.jaxa.jp/jaxatv/files/20181213_InnovativeSatTD1.pdf

  1. 吊臂/膜复合结构的“多功能开发膜结构”的空间演示: 我们将展示未来实现平面天线和薄膜结构太阳能电池阵列的技术。 将厚度为50μm的虚设备(透明膜)固定到1m×1m的整个显影膜上。 通过防腐碳复合管的弹力扩大。 在发射时,部署膜以1U尺寸存储。
  2. 构建2U + 1U大小的“实验平台”和空间演示:开发的膜(1U)通过延伸桅杆(自拍棒)与卫星体(2U)隔开1米,并且开发行为/ 按图像测量。
  3. 具有5.8 GHz业余无线电和UHF膜接收的高速下行链路: Fukuoka Bunka实现FITSAT-1(Shika)的高速通信技术以及天线粘贴薄膜的实现。
NirViaje commented 5 years ago

ALE 1 (Astro Live Experiences 1)

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image The final satellite will also have an onboard computer that will determine if dropping the pellets could damage any of the other 2,000 spacecraft that are also in orbit. It’ll use three CPUs to check the position of other satellites and calculate where and how fast the pellets will travel. On paper, this should keep ALE from damaging anything neighboring orbiters.

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Artificial Shooting Star Project “Sky Canvas”

We aim to produce artificial shooting stars by projecting particles, made out of special materials, from orbiting micro-satellites. When the particles re-enter the earth’s atmosphere, they burn through a process known as plasma emission, creating the appearance of shooting stars on the ground. The particles burn with a sufficient brightness to be visible by people in an area upto 200km in diameter.

image Dr. Lena Okajima

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NirViaje commented 5 years ago

Hodoyoshi 2

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Hodoyoshi 2 or RISESat (Rapid International Scientific Experiment Satellite) is a small experimental earth-observing, science and technology demonstration satellite.

RISESAT carries 8 scientific instruments with a total mass of 10 kg developed by the following countries: Sweden, Czech Republic, Hungary, Taiwan, Vietnam, USA and Germany.

Following payloads are on board:

Hodoyoshi 2 was launched piggy-back as a secondary payload.

https://space.skyrocket.de/doc_sdat/hodoyoshi-2.htm

NirViaje commented 5 years ago

Aoba Velox-IV

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