接收振蕩器 的英文怎麼說
中文拼音 [jiēshōuzhèndàngqì]
接收振蕩器
英文
receiving oscillator- 接 : Ⅰ動詞1 (靠近;接觸) come into contact with; come close to 2 (連接; 使連接) connect; join; put ...
- 收 : Ⅰ動詞1 (把攤開的或分散的事物聚集、合攏) put away; take in 2 (收取) collect 3 (收割) harvest...
- 振 : 動詞1. (搖動; 揮動) shake; flap; wield 2. (奮起) brace up; rise with force and spirit
- 蕩 : Ⅰ動詞1 (搖動; 擺動) swing; sway; wave 2 (無事走來走去; 閑逛) loaf; wander; roam; loiter; go a...
- 器 : 名詞1. (器具) implement; utensil; ware 2. (器官) organ 3. (度量; 才能) capacity; talent 4. (姓氏) a surname
- 接收 : 1 (收受) receive; reception; accept; [電學] receipt; receiving 2 (接管) take over; expropriat...
-
Gps is a planet wireless conductance system which is global and all - weather, gps can offer high precision time orientation information to infinite user, clock precision reachs 10 ? 6 magnitude 。 not only changes traditional time method of quartz crystal clock, but also replaces wireless shortwave and even more lowfrequency signal and tv signal whose overlay range is limited and low precision, offers advantage to geology field task, achieve automatization and high precision of seismic flow observation
利用gps授時信號全方位、全天候、連續性、實時性和高精度的特點,以gps信號為基準來校準本地時鐘(晶體振蕩時鐘或原子鐘) ,將gps接收機輸出信號的長期穩定度和恆溫晶振的短期穩定度相結合,應用大規模可編程邏輯器件,設計和實現了由pc104控制的實時在線授時系統。The precise clock source is crystal oscillator made of 74hc04 ; the mute circuit can conceal the error and solve the problem of noise ; the antenna switching circuit in the receiver is to select one antenna from two which receives signal better. it can improve the quality of the receiving audio signal, restrain the noise effectively and promote the system performance
高精度的時鐘源是由74hc04構成的晶體振蕩器;靜音電路將出錯的音頻信號進行差錯掩蓋,很好地解決了噪聲問題;接收機採用兩副天線切換工作,提高了音頻信號接收質量,有效地抑制干擾,提升了系統的性能。Secondly, the dissertation presents a 3 - dimensional searching method with afc and pn code synchronization and adaptive array convergence in order to accurately estimate the frequency difference between the received signal and the local oscillator
其次,為了準確估計接收信號和本地振蕩器之間的頻差,提出了afc 、 pn碼同步、自適應陣收斂的三維搜索策略。Firstly, the theory basis of if digital receiver is introduced, which includes over - sampling digital mixing receiving scheme and mathematic model with which the scheme is proved correctly. secondly, the numerically controlled oscillator ( nco ) is designed and realized
首先介紹了中頻數字接收機採用的過采樣數字混頻數字接收方案,然後給出數學模型,從理論上論證了該方案的可行性;二、數控振蕩器設計與實現。In this dissertation, the method to design and realize the digital receiver in the field programmable gate array ( fpga ) has been discussed ; combining coordinate rotation digital compute ( cordic ) to design nco, we get a efficient structure without multiplications
本論文正是運用現場可編成邏輯器件( fpga )設計與實現數字接收機問題開展研究,結合坐標旋轉數值計算( cordic )演算法實現數控振蕩器( nco ) ,得到一種免乘法器高效可移植性好的數字接收機fpga實現結構,並在現有的硬體平臺上進行了接收機系統的調試,測試結果表明該接收機能夠達到系統指標要求。It can interface with single chip computer expediently and transmit data by rule and line. oscillator in the infrared transmitting circuit that consisted of ne555, and can used to modulates the output from serial port of single chip computer. the integrated infrared receiver can demodulates, filter and transmit the signal to single chip computer
紅外線西北口二j匕大學悶成d匕學位咭侖文發送電路的振蕩器由ne555構成,它可對串列口輸出信號進行調制,一體化的紅外接收頭對紅外信號進行解調、濾波和整形,再送單片機處理。As the developing of economy and the progressing of science, microwave power meter has been used to measure output / input of transmitter / receiver , output of signal generator and output of monofier, it has many uses in national defence, communication and scientific research
隨著經濟的發展,科技的進步,微波功率計已被廣泛用於測量發射機/接收機的輸出/輸入功率,信號源的輸出,以及振蕩器的輸出等。在國防、通訊、科研等領域有著廣泛的用途。A full - digital demodulation technique is introduced in this paper, which can make it easy and quick to design and achieve binary phase shift keying ( bpsk ) demodulator, and also can reduce the requirement of the oscillator frequency precision and the degree of stability of the receiver
本文介紹了一種適合於用數字信號處理器( dsp )實現的全數字解調技術。該技術能方便、靈活地設計實現二進制相移鍵控( bpsk )解調器,而且使用該技術可以大大降低對接收機本身的振蕩頻率精度和穩定度的要求。分享友人