#航空快讯# 【意大利D-Orbit公司将开发监测基础设施的雷达卫星服务】据美国航天新闻网站2019年11月21日报道，由意大利航宇企业D-Orbit公司领导的一支团队计划在两年半的时间内投入运行一颗能监测基础设施的合成孔径雷达（SAR）卫星。
根据价值1000万欧元（约合1107万美元）的NOCTUA地貌监测合同，D-Orbit公司与合作伙伴将向意大利伦巴第地区的政府机构和公民个人提供建筑物、桥梁和公路的位移信息。
2018年8月，意大利热那亚的莫兰迪大桥有200米长的桥面发生了坍塌，造成了数十人死亡。这场悲剧加剧了政界人士和意大利公众对意大利老化基础设施的担忧。
NOCTUA项目是意大利北部的伦巴第地区选定的33个项目之一，是价值1.14亿欧元的工业研发项目支撑计划的组成部分。
D-Orbit公司将作为NOCTUA项目的主合同商来开发基于SAR卫星的端到端国土监测服务。该公司称将在2020年1月启动开发活动，计划两年半内推出相应服务，并开展测试。
已从事12年机载SAR业务的意大利-荷兰企业MetaSensing公司是NOCTUA项目的团队成员之一。MetaSensing公司表示，其正在制造一种能在太空中提供30厘米分辨率的X波段SAR。
除了全天时全天候提供图像外，对某一区域反复的SAR观测还可以揭示地面上极小的变化。而通常这是通过两颗卫星沿着同一轨道运行来实现的。由于NOCTUA项目计划采用单颗卫星进行干涉测量，因此确保SAR的精确指向和卫星轨道保持稳定将非常重要。
MetaSensing公司的SAR载荷将安装在D-Orbit公司可自由飞行的Ion立方星运载器上。D-Orbit公司准备于2020年第一季度通过“织女星”火箭开展Ion立方星运载器的首次在轨验证。
根据价值1000万欧元（约合1107万美元）的NOCTUA地貌监测合同，D-Orbit公司与合作伙伴将向意大利伦巴第地区的政府机构和公民个人提供建筑物、桥梁和公路的位移信息。
2018年8月，意大利热那亚的莫兰迪大桥有200米长的桥面发生了坍塌，造成了数十人死亡。这场悲剧加剧了政界人士和意大利公众对意大利老化基础设施的担忧。
NOCTUA项目是意大利北部的伦巴第地区选定的33个项目之一，是价值1.14亿欧元的工业研发项目支撑计划的组成部分。
D-Orbit公司将作为NOCTUA项目的主合同商来开发基于SAR卫星的端到端国土监测服务。该公司称将在2020年1月启动开发活动，计划两年半内推出相应服务，并开展测试。
已从事12年机载SAR业务的意大利-荷兰企业MetaSensing公司是NOCTUA项目的团队成员之一。MetaSensing公司表示，其正在制造一种能在太空中提供30厘米分辨率的X波段SAR。
除了全天时全天候提供图像外，对某一区域反复的SAR观测还可以揭示地面上极小的变化。而通常这是通过两颗卫星沿着同一轨道运行来实现的。由于NOCTUA项目计划采用单颗卫星进行干涉测量，因此确保SAR的精确指向和卫星轨道保持稳定将非常重要。
MetaSensing公司的SAR载荷将安装在D-Orbit公司可自由飞行的Ion立方星运载器上。D-Orbit公司准备于2020年第一季度通过“织女星”火箭开展Ion立方星运载器的首次在轨验证。
spacex正式加入了NASA的2024登月计划，目标是2022年登陆月球表面。预计bfr研发成功后，先发射一艘到地球近地轨道，之后再发射一个去对接并加油，之后直飞月球。前泽友作已经付款并且“骑”了马一龙。运力最高达到100吨，而其他公司都是几百公斤级的，这运力差距达到了100-1000倍。且bfr是直飞月球，没那么多gate什么的，不再是重复土星五号的旧路。NASA，就它了，醒醒吧！
SpaceX officially joined NASA's 2024 lunar landing program, with the goal of landing on the moon's surface in 2022. It is expected that after the successful development of BFR, a ship will be launched to the earth's low earth orbit, and then another ship will be launched to dock and refuel, and then fly directly to the moon. Qianzeyouzuo has paid and "rode" the horse. The transportation capacity is up to 100 tons, while other companies are all hundreds of kilograms, and the transportation capacity gap is 100-1000 times. And BFR is a direct flight to the moon, not so many gates and so on. It is no longer the old road of repeating Saturn v. NASA, that's it. Wake up! https://t.cn/8FVxQY8
SpaceX officially joined NASA's 2024 lunar landing program, with the goal of landing on the moon's surface in 2022. It is expected that after the successful development of BFR, a ship will be launched to the earth's low earth orbit, and then another ship will be launched to dock and refuel, and then fly directly to the moon. Qianzeyouzuo has paid and "rode" the horse. The transportation capacity is up to 100 tons, while other companies are all hundreds of kilograms, and the transportation capacity gap is 100-1000 times. And BFR is a direct flight to the moon, not so many gates and so on. It is no longer the old road of repeating Saturn v. NASA, that's it. Wake up! https://t.cn/8FVxQY8
这是位于月球侧面的，乔尔丹诺布鲁诺陨坑，直径22公里，深达3.2公里。根据形态判断，大约形成于4百万年前，由一颗直径2公里的小行星，以时速40,000公里撞击了月球表面，激起冲天耀眼的火光。如果当时正值月明星稀之夜，那么远在东非高原的祖先们，应该惊骇地看到了这一幕，并且为之奔走呼号，彻夜未眠。而这惊悚的一幕或许以口耳相传的方式流传于后世，成为古老神话传说的因素。老刘的想象。[允悲]
Giordano Bruno, seen here, is 13 miles across and nearly 2 miles deep.
The energy needed to make a crater of this size is staggering. A rock about 1.25 miles in diameter would have to hit the Moon at about 25,000 miles/hour☄️
Giordano Bruno is a 22-kilometre (14 mi) lunar impact crater on the far side of the Moon, just beyond the northeastern limb. It lies in an area that can be viewed during a favorable libration, although the area is viewed from the side and not much detail can be seen. It lies between the craters Harkhebi to the northwest and Szilard to the southeast.
When viewed from orbit, Giordano Bruno is at the center of a symmetrical ray system of ejecta that has a higher albedo than the surrounding surface. The ray material extends for over 150 kilometres (93 mi) and has not been significantly darkened by space erosion. Some of the ejecta appear to extend as far as the crater Boss, over 300 kilometres (190 mi) to the northwest. The outer rim of the crater is especially bright compared to its surroundings. To all appearances, this is a young formation that was created in the relatively recent past, geologically speaking. Based on photos from a lunar orbiter, the crater's age has been estimated at 4 million years.
Giordano Bruno, seen here, is 13 miles across and nearly 2 miles deep.
The energy needed to make a crater of this size is staggering. A rock about 1.25 miles in diameter would have to hit the Moon at about 25,000 miles/hour☄️
Giordano Bruno is a 22-kilometre (14 mi) lunar impact crater on the far side of the Moon, just beyond the northeastern limb. It lies in an area that can be viewed during a favorable libration, although the area is viewed from the side and not much detail can be seen. It lies between the craters Harkhebi to the northwest and Szilard to the southeast.
When viewed from orbit, Giordano Bruno is at the center of a symmetrical ray system of ejecta that has a higher albedo than the surrounding surface. The ray material extends for over 150 kilometres (93 mi) and has not been significantly darkened by space erosion. Some of the ejecta appear to extend as far as the crater Boss, over 300 kilometres (190 mi) to the northwest. The outer rim of the crater is especially bright compared to its surroundings. To all appearances, this is a young formation that was created in the relatively recent past, geologically speaking. Based on photos from a lunar orbiter, the crater's age has been estimated at 4 million years.
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