【正文】 sage munication skills. The eighth and ninth beidou satellite in 2011, was the long March 3 a rocket into space is scheduled to transfer orbit. In December 2011, the beidou satellite navigation system, a spokesman for RanCheng its said the beidou satellite navigation system will be formed in the 2020 global coverage. In recent years the development of satellite munication technology emerge in endlessly. Such as very small earth station antenna (VSAT) system, the movement of the low and middle orbit satellite munication system has received widespread attention and application. Satellite munication is an important part of global information highway in the future. It with its wide coverage, large capacity of munication. Communication distance, without being limited by the geographical environment, high quality and economic benefit, etc. The application in our country for the first time in 1972, and the rapid development, together with the optical fiber munication, digital microwave munication, became the mainstay of the contemporary long distance munication in our country.衛(wèi)星通訊由于它不受地理條件的限制，具有靈敏的可挪動性，因此仍依它的優(yōu)勢創(chuàng)新開展。但亦遭到迅速開展的光纖通訊的挑戰(zhàn)，它比衛(wèi)星通訊的容量大，傳輸速率高，有特別多越洋通訊被海底光纜所替代，陸地干線亦有類似情況。20世紀(jì)90年代中后期衛(wèi)星電視直播(DBs——Direct Broadcast Satellite或DTH——Direct To Home)、衛(wèi)星聲音廣播、衛(wèi)星挪動通訊以及衛(wèi)星寬帶多媒體通訊成為新的四大開展潮流。 Satellite munication because it is not limited by geographical condition, with flexible mobility, so is still in accordance with its advantages of innovation and development. But also by the challenge of the rapid development of optical fiber munication, it is larger than the capacity of satellite munications, the transmission rate is high, there are a lot of overseas munications were replaced by a submarine cable, main land also has a similar situation. In mid and late 1990 s Satellite television Broadcast (DBs, Direct Broadcast Satellite or DTH Direct To the Home), Satellite voice Broadcast, Satellite mobile munication and Satellite broadband multimedia munication bees the new four development trend.衛(wèi)星通訊的開展趨勢總的開展方向是大容量、大功率、高速率、寬帶、低本錢、高發(fā)射頻率、多轉(zhuǎn)發(fā)器、多點(diǎn)波束和賦形波束，應(yīng)用星上處理技術(shù)切換信號，處理信號等，21世紀(jì)的衛(wèi)星直播電視(DBS—TV)、個人挪動衛(wèi)星通訊、多媒體衛(wèi)星通訊、衛(wèi)星音頻廣播、衛(wèi)星網(wǎng)絡(luò)電視等將會得到大量開展。VSAT業(yè)務(wù)范圍不斷擴(kuò)大，深化到國民經(jīng)濟(jì)的各個領(lǐng)域，更加顯示其經(jīng)濟(jì)和社會效益，Ka波段的應(yīng)用使設(shè)備更加小型化，因此亦帶來衰減嚴(yán)峻的缺陷。光通訊在衛(wèi)星通訊中的應(yīng)用逐步變得成熟可取，它要求準(zhǔn)確的衛(wèi)星操縱技術(shù)，目前在國際上還處于研發(fā)階段，可能不久將會進(jìn)入有用階段。Satellite munications development trend of the general development direction of large capacity, high power, high speed, broadband, low cost and high transmitting frequency, the repeater, multipoint beam and informs the beam, the application of the star on the switching signal processing technology, signal processing, etc., satellite live TV in the 21st century (DBS, TV), personal mobile satellite munications, multimedia satellite munication, satellite audio broadcast, satellite network TV will be a lot of development. VSAT business scope expands unceasingly, deep into every field of national economy, more show its economic and social benefits, kaband application further miniaturization of equipment, of course also brought attenuation serious defects. Optical munication application in satellite munication gradually bee mature, it requires precise satellite control technology, the current in the world is still in the development stage, is expected soon will enter the practical stage.我國的衛(wèi)星通訊事業(yè)亦在迅速開展，衛(wèi)星通訊的應(yīng)用領(lǐng)域不斷擴(kuò)大，除金融、證券、郵電、氣象、地震等部門外，遠(yuǎn)程、遠(yuǎn)程醫(yī)療、應(yīng)急救災(zāi)、應(yīng)急通訊、應(yīng)急電視廣播、海陸空導(dǎo)航、連接互聯(lián)網(wǎng)的網(wǎng)絡(luò)、電視等將會廣泛應(yīng)用。我國的衛(wèi)星發(fā)射技術(shù)，長征系列運(yùn)載火箭領(lǐng)先世界，大推力、無污染、無毒的環(huán)保型火箭發(fā)動機(jī)我國已試驗(yàn)成功，這為開展我國的大型通訊衛(wèi)星乃至載人航天、探月工程制造了有利條件。Satellite munication in China is in rapid development, expanding the application areas of satellite munication, in addition to the financial, securities, post and telemunications, meteorology, earthquake and other departments, remote education, remote medical treatment, emergency disaster relief, emergency munications, emergency broadcasting, land, sea and air navigation, connect to the Internet network telephone, TV and so on will be widely used. Satellite launch technology in our country, leads the world in long march rockets, big thrust, pollutionfree, nontoxic environmentally friendly rocket engine has been successful in our country, this for the development of our countrys large munication satellites and manned spaceflight, lunar exploration project has created favorable conditions.在市場上，由于該行業(yè)的開展速度太快，對人才的需求量又相當(dāng)大，可謂“最容易找到好工作”的專業(yè)。因此關(guān)于今后，我們這些專業(yè)的學(xué)生，是特別有動力的。In the market, due to the development of the industry too fast, the demand for talent and is quite large, is a professional \the easiest way to find a good job\. So for the future, we, the sophomore, is of great power.