Based on the above analysis , some parameters are carefully adjusted , which make the system gain better performance 在此基礎(chǔ)上調(diào)整了部分參數(shù),使系統(tǒng)具備了良好的控制效果。
A 1 / 10 - scale model quasi - fractal rcl - loaded monopole antenna was fabricated and measured , which has a bandwidth ratio of about 10 : 1 , with vswr less than 3 . 0 , calculated system gain greater than - 9 . 4db and the efficiency above 14 % 加入寬帶匹配網(wǎng)絡(luò)后,對其10 : 1的縮比模型天線進(jìn)行了測試,在全頻率段內(nèi)駐波系數(shù)小于3 ,理論增益大于- 9 . 4db ,效率大于14 % 。
After establishing dynamics model of helicopter , we can design the control system for the helicopter , using the most advanced method . we can make our system gain the most excellent performance by repeating trial 本論文對直升機(jī)增穩(wěn)控制系統(tǒng)進(jìn)行研究、利用現(xiàn)有的直升機(jī)動力學(xué)模型以及針對該直升機(jī)模型建立的增穩(wěn)控制系統(tǒng)建立一套直升機(jī)機(jī)動飛行控制仿真軟件。
In addition , background noise have to be token into account . all these requires that the whole system to have higher anti - interferce properties . by adopting the technology of uv sensor , watchdog and software filters , noise is notably shielded , accordingly the system gains high performance in reliability and stabilization . this is also ensued by its self - examination function which can efficiently avoid error or miss alarm 本系統(tǒng)采用紫外線火焰?zhèn)鞲衅髯鳛樘綔y器,結(jié)合硬件看門狗及軟件濾波等方法,有效地屏蔽了噪聲的影響;系統(tǒng)穩(wěn)定可靠,具有自診斷功能,可有效防止誤報和漏報,實現(xiàn)準(zhǔn)確報警,并具有豐富的各種顯示和報警功能。
First , author studies oppressive jamming technology of sar based on its system gain , analyses its fundamental theory and jamming mechanism , programs an integral simulation software which produces noise data of several kinds , at the same time carries out many simulation experiments under different noise - to - signal ratio of each noise type , then makes in - depth analysis and comparison on those images resulting from simulation experiments and summarizes some conclusions of theoretical and practical value 作者首先在分析合成孔徑雷達(dá)系統(tǒng)增益的基礎(chǔ)上研究了壓制性干擾技術(shù),分析其基本原理及干擾機(jī)制,編制了一個完整的干擾仿真軟件,產(chǎn)生多種類型的噪聲數(shù)據(jù),針對每種噪聲類型又調(diào)整其噪信比進(jìn)行了大量的仿真實驗,然后對實驗的結(jié)果圖像進(jìn)行了深入的分析、比較,總結(jié)出了具有一定理論和實用價值的結(jié)論。
system: n. 1.體系,系統(tǒng);分類法;組織;設(shè)備,裝置。 2.方 ...gain: n. 【建筑】 1.(木料上或墻上的)腰槽。 2.雄榫上 ...gain system: 放大系數(shù)可調(diào)系統(tǒng)system-gain: 系統(tǒng)增益available power gain of system: 系統(tǒng)有用功率增益available voltage gain of the system: 系統(tǒng)有用電壓增益direct gain passive system: 直接增益被動式系統(tǒng)gain sharing system: 利益分享制度gain-switching system: 增益開關(guān)系統(tǒng)isolated gain system: 隔離體系overall system gain: 總系統(tǒng)增益pair gain system: 線對增容系統(tǒng),線對擴(kuò)容系統(tǒng)variable gain feel system: 可變傳動比的載荷感覺裝置gain: vt. 1.獲得;博得,掙得;贏得,打勝(戰(zhàn)爭、官司)。 2.吸引;爭取…(到一邊),說服。 3.(尤指通過努力)到達(dá)(目的地)。 4.增加,增進(jìn);(鐘、表等)走快 (opp. lose)。 gain one's living 謀生。 gain the summit 到達(dá)山頂。 My watch gains five minutes a day. 我的表每天快五分鐘。 vi. 1.得利,得益。 2.前進(jìn),進(jìn)步。 3.增加,增重,增進(jìn)。 4.(鐘、表等)快走。 gain by comparison [contrast] 比較[對比]之下顯出其長處。 gain ground 進(jìn)展,占優(yōu)勢。 gain headway 前進(jìn)。 gain in 獲得,增長(gain in health 增進(jìn)健康。 gain in influence 影響增長)。 gain on [upon] 1. 蠶食,侵入。 (The sea gains on the land. 海水侵入陸地)。 2. 接近,逼近,趕上。 3. 占優(yōu)勢,超過,勝過。 (The days are gaining on the night. 白天漸漸比夜晚長了)。 4. 得歡心,巴結(jié)上。 gain one's ends 達(dá)到目的。 gain one's point 貫徹自己意見。 gain over 說服,拉攏過來。 gain speed 漸漸增加速度。 gain strength 力量增加;(風(fēng)力等)漸強(qiáng)。 gain the ear of 得人傾聽。 gain the wind 占他船的上風(fēng)。 gain time 1. (鐘、表等)走得快。 2. (用拖延等辦法)爭取時間。 n. (opp. loss) 1.獲利,獲得。 2.得益,利益。 3.〔 pl.〕 收益,利潤;報酬,獎金。 4.增大,增加,增進(jìn)。 5.【無線電】增益,放大,增量。 be blinded by the love of gain 利令智昏。 Ill-gotten gains never prosper. 〔諺語〕不義之財,發(fā)不了家。 No gains without pains. 〔諺語〕不勞則無獲。 a gain to one's happiness 幸福的增進(jìn)。 n. 【建筑】 1.(木料上或墻上的)腰槽。 2.雄榫上的斜肩。 vt. 在…上開腰槽,用腰槽連接。 gain in: 增長;改進(jìn)gain on: 逼近, 超過, 侵蝕; 接近; 跑得比…快;逼近a gain the hedge: 樹籬的缺口a olute gain: 絕對增益a ormal gain: 非常收益abnormal gain: 非常收益; 非正常收益absolute gain: 絕對增益accuracy gain: 增益準(zhǔn)確度acoustic gain: 聲增益; 音量增益actual gain: 實際收益; 實際增益; 有效增益aerial gain: 天線增益