当前位置:考试网  > 试卷库  > 技能鉴定  > 科技类  > 无人机资格证  >  无人机地面站发展的趋势
试题预览

无人机地面站发展的趋势

查看答案
收藏
纠错
正确答案:

(1)发展通用地面站:确定一套通用的图像存储与传输的协议,以解决各层次无人机之间的地面站和数据的接口标准问题。

(2)重视一站多机的地面站的设计,包括硬件结构及友好的人机界面。这种地面站的设计可同时操控多架无人机、使用较少的操作员操纵更多的无人机,这样既提高了操作效率,也减少了人力成本。

(3)逐步发展无人作战飞机地面站的设计。是利用现有的飞机还是研究一个全新的飞机现尚无定论,但是先研究地面站的人机界面设计是必要的。

(4)发展可靠的、干扰小的、宽带宽的数据链路,提高数据传输效率。其涉及的关键技术有:数据链路的抗截获、抗干扰的编码、加密、变频、跳频、扩频与解扩技术和图像压缩.

答案解析:

暂无解析

你可能感兴趣的试题

InfactPeterwouldratherhaveleftforSanFranciscothan____inNewYork.

县级以上的地方各级人民代表大会常务委员会的组成人员也可以担任国家行政机关、监察机关、审判机关和检察机关的职务。

监察委员会主任每届任期同本级人民代表大会每届任期相同。

全国人民代表大会常务委员会的组成人员可以担任监察机关的职务。

Duringthetouristseason,therearemanypeoplewanderinginthiscitytoseetheoldcastles_____inthesixteenthcentury.

热门试题 更多>
How a Frenchman is reviving McDonald’s in Europe A. When Denis Hennequin took over as the European boss of McDonald’s in January 2004, the world’s biggest restaurant chain was showing signs of recovery in America and Australia, but sales in Europe were sluggish or declining. One exception was France, where Mr Hennequin had done a sterling job as head of the group’s French subsidiary to sell more Big Macs to his compatriots. His task was to replicate this success in all 41 of the European countries where anti-globalisers’ favourite enemy operates. B. So far Mr Hennequin is doing well. Last year European sales increased by 5.8% and the number of customers by 3.4%, the best annual results in nearly 15 years. Europe accounted for 36% of the group’s profits and for 28% of its sales. December was an especially good month as customers took to seasonal menu offerings in France and Britain, and to a promotion in Germany based on the game of Monopoly. C. Mr Hennequin’s recipe for revival is to be more open about his company’s operations, to be “locally relevant”, and to improve the experience of visiting his 6,400 restaurants. McDonald’s is blamed for making people fat, exploiting workers, treating animals cruelly, polluting the environment and simply for being American. Mr Hennequin says he wants to engage in a dialogue with the public to address these concerns. D. He introduced “open door” visitor days in each country which became hugely popular. In Poland alone some 50,000 visitors came to McDonald’s through the visitors’ programme last year. The Nutrition Information Initiative, launched last year, put detailed labels on McDonald’s packaging with data on calories, protein, fat, carbohydrates and salt content. The details are also printed on tray-liners. E. Mr Hennequin also wants people to know that “McJobs”, the low-paid menial jobs at McDonald’s restaurants, are much better than people think. But some of his efforts have backfired: last year he sparked a controversy with the introduction of a “McPassport” that allows McDonald’s employees to work anywhere in the European Union. Politicians accused the firm of a ploy to make cheap labour from eastern Europe more easily available to McDonald’s managers across the continent. F. To stay in touch with local needs and preferences, McDonald’s employs local bosses as much as possible. A Russian is running McDonald’s in Russia, though a Serb is in charge of Germany. The group buys mainly from local suppliers. Four-fifths of its supplies in France come from local farmers, for example. (Some of the French farmers who campaigned against the company in the late 1990s subsequently discovered that it was, in fact, buying their produce.) And it hires celebrities such as Heidi Klum, a German model, as local brand ambassadors. G. In his previous job Mr Hennequin established a “design studio” in France to spruce up his company’s drab restaurants and adapt the interior to local tastes. The studio is now masterminding improvements everywhere in Europe. He also set up a “food studio”, where cooks devise new recipes in response to local trends. H. Given France’s reputation as the most anti-American country in Europe, it seems odd that McDonald’s revival in Europe is being led by a Frenchman, using ideas cooked up in the French market. But France is in fact the company’s most profitable market after America. The market where McDonald’s is weakest in Europe is not France, but Britain. I. “Fixing Britain should be his priority,” says David Palmer, a restaurant analyst at UBS. Almost two-thirds of the 1,214 McDonald’s restaurants in Britain are company-owned, compared with 40% in Europe and 15% in America. The company suffers from the volatility of sales at its own restaurants, but can rely on steady income from franchisees. So it should sell as many underperforming outlets as possible, says Mr Palmer. J. M.Mark Wiltamuth, an analyst at Morgan Stanley, estimates that European company-owned restaurants’ margins will increase slightly to 16.4% in 2007. This is still less than in the late 1990s and below America’s 18-19% today. But it is much better than before Mr Hennequin’s reign. He is already being tipped as the first European candidate for the group’s top job in Illinois. Nobody would call that a McJob. Notes to Reading Passage 1 1.sterling高质量的 e.g. He has many sterling qualities. 他身上有许多优秀的品质。 2. menial 不体面的, 乏味的(工作、职业) 3. spruce up打扮整齐、漂亮、装饰 4. mastermind指挥、谋划(一个计划或活动) e.g. The police know who masterminded the robbery.警察知道是谁策划了那次抢劫。 5. underperform表现不佳表现出低于标准的工作水平、企业出现亏本 Questions 1-6 Do the following statements reflect the claims of the writer in Reading Passage 1? Write your answer in Boxes 1-6 on your answer sheet. TRUE if the statement reflects the claims of the writer FALSE if the statement contradicts the claims of the writer NOT GIVEN if it is impossible to say what the writer thinks about this 1. McDonald was showing the sign of recovery in all European countries except France after Denis Hennequin took office as the boss of Euro-markets. 2. Starting from last year, detailed labels are put on McDonald’s packaging and detailed information is also printed on tray-liners. 3. France is said to be the most anti-American country in Europe, but the ideas of the “open door” visiting days and “McPassport” are invented in the French market. 4. Britain possesses the weakest McDonald market among European countries and approximately 1214 McDonald’s restaurants are company-owned. 5. According to David Palmer, a restaurant analyst at UBS, David Hennequin should treat the problem about McDonald in Britain as the most important thing. 6. David Palmer suggested that the management of McDonalod in Italy should sell as many its outlets which lose money in business as possible for revival. Questions 7-10 Choose the appropriate letters A-D and write them in boxes 7-10 on your answe sheet. 7. The word “sterling” in line 3 of Paragraph A means__________. A. difficult B. menial C. terrible D. excellent 8. Which of the following statements on the accusation of MacDonald is NOT TRUE? A. It tends to make people fat. B. Its operations are very vague. C. It tends to exploit workers. D. It tends to treat animals cruelly. 9. Which of the following measures taken by Denis Hennequin produced undesired result? A. “Food Studio” scheme. B. “Open Door” visitor days. C. The “McPassport” scheme. D. The Nutrition Information Initiative. 10. What did Denis Hennequin do so as to respond to local trends? A. set up a “Food Studio” . B. established a “Design Studio”. C. hired celebrities as local brand ambassadors. D. employed local bosses as much as possible. Questions 11-14 Complete each of the following statements (Questions 11-14) with words or number taken from Reading Passage 1. Write NO MORE THAN THREE WORDS for each answer. Write your answers in boxes 11-14 on your answer sheet. 11. After January 2004, McDonald was making improvement following a period of slump in America and Australia, but sales in Europe were …………………………. 12. Business of McDonald in France and Britain was particularly good in December since customers took to …………………………….. 13. Compared with other countries, France is McDonald’s ………………………. next to America. 14. ……………………. of McDonald’s restaurants in America are companied–owned and the figure is much lower than that in Britain.
试题分类: 阅读
练习次数:2次
试题分类: 理论与实务
练习次数:0次
试题分类: 初级(口语)
练习次数:0次
In the earliest stages of man's development he had nomore need of money than animals have.He was content with very simple forms of shelter,made his own rough tools and weapons and could provide food and clothing for himself and his family from natural materials around him.As he became more civilized,however,he began to want better shelter,more efficient tools and weapons,and more comfortable and more lasting clothing than could be provided by his own neighborhood or by the work of his own unskilled hands.For these things he had to turn to the skilled people such as smiths,leather workers or carpenters.It was then that the question of payment arose. At first he got what he wanted by a simple process ofexchange.The smith who had not the time to look after land or cattle was glad to take meat or grain from the farmer inexchange for an axe or a plough.But as more and more goods which had no fixed exchange value came on the market,exchange became too complicated to be satisfactory.Another problem arose when those who made things wanted to get stocks of wood or leather,or iron,but had nothing to offer in exchange until their finished goods were ready. Thus the difficulties of exchange led by degrees to the invention of money.In some countries easily handled things like seeds or shells were given a certain value and the farmer,instead of paying the smith for a new axe by giving him some meat or grain,gave him so many shells.If the smith had any shells left when he had bought his food,he could get stocks of the raw materials of his trade.In some countries quite large things such as cows or camels or even big flat stones were used for trade.Later,pieces of metal,bearing values according to the rarity of the metal and the size of the pieces,or coins were used.Money as we know it had arrived. 1.Exchange of goods became difficult because _________. A man became more civilized B smiths began to look after land or cattle in their spare time C more and more goods which had no fixed exchange alues came to the marker D farmers hadn't enough grain or meat to provide for skilled workers 2.Money was not used until _______. A paper was invented B people practiced a simple process of exchange C nothing could be offered in exchangeD the exchange of one thing for another became too complicated 3.The best title for this passage is _____. A What is money B What are money's functions. C The importance of money D The beginning of money
试题分类: 阅读
练习次数:6次
试题分类: 初级(口语)
练习次数:1次
扫一扫,手机做题