fixed point algorithm 中文意思是什麼
fixed point algorithm
解釋
定點演算法-
Secondly, in phase unwrapping to overcome the spread of wrong point, changing the patch of unwrapping phase is done to improve the correctness of it. then, the relation between the unwrapping phase and the height of reconstructed object is discussed detailedly. the data processing, algorithm analysis and reconstructing object are done for the collecting fringe image which are all based on matlab language, in all these achievements, the improvement and innovation aspect are following : a ) in order to stabilize the interference fringe, a new equivalent shifting object method is presented by using fringe stabilizing device to stabilize the interference fringe though moving object and ccd camera which fixed on a precise moving platform together, the experimental result shows the fringe drift is less than a / 20 in five minutes, and the equivalent phase shifting precision is x / 100
論文在全面闡述了光學三維輪廓位相測量術的發展、應用現狀、研究熱點及未來發展趨勢的基礎上，簡要介紹了傅立葉變換和相移位相輪廓測量術的基本原理，對兩種測量方法存在的問題及誤差進行詳細分析和比較；針對位相解包裹錯誤點的傳播問題，作者通過改變解包裹路徑來提高位相解包裹的正確性；分析討論從解包裹位相（ x ， y ）到再現物體的高度h （ x ， y ）物理量之間的關系，研究相應的演算法，利用matlab平臺，對實際採集的條紋圖像進行處理和輪廓重構，其中改進及創新工作主要表現在以下兩個方面： （ a ）針對干涉型結構光場干涉條紋出現的漂移抖動對相移的影響，提出了一種用條紋穩定器穩定干涉條紋，用精密移動平臺使物體和ccd攝像頭同步移動實現等效相移的方法，建立了相應的測量系統，系統的條紋穩定可以達到。 -
Round these two respects, how to structure security elliptic curve cryptography and the implementations of ecc is first discussed in this paper. then we have analysed especially the scalar multiplication on the elliptic curves, and present a new algorithm to quickly implement the fixed point scalar multiplication according to the idea of interleaving exponentiation algorithm and power division. this algorithm is much faster than fixed - base windowing method ; and a little faster than fixed - base comb method
圍繞這兩個方面的問題，本文首先討論了如何構造安全的橢圓曲線密碼體制和橢圓曲線密碼體制的應用；然後重點分析了橢圓曲線上數乘運算的快速實現，並結合interleavingexponentiation演算法和冪分割的思想，提出一種計算固定點數乘的快速演算法，該演算法的計算速度明顯快于fixed - basewindowing演算法，稍快于fixed - basecomb演算法。 -
On the realization of this new scheme, the influence of the fixed - point quantification upon the modified max - log - map algorithm is evaluated. simulations show that : if the input data is 5 bits at length, the unfavorable effect of quantification error is negligible
在系統實現方面，分析了輸入數據的定點量化對改進的max - log - map譯碼演算法的影響，結果表明輸入數據採用5比特量化時，量化誤差對譯碼結果的影響已很小。 -
The matlab language and c language were applied to simulate the fixed - point dsp arithmetic of equalizer algorithm. the simulation result indicated the diveragence phenomenon would happen to adfe ( adaptive decision feedback equalizer ) based on rls algorithm under the fixed - point finite - precision arithmetic
採用matlab和c語言模擬均衡器定點dsp演算法的實現，模擬結果表明rls演算法的自適應判決反饋均衡器（ adfe ）在定點有限字長運算的情況下存在著發散現象。 -
The platform implements the signal processing dataflow of range - doppler algorithm such as range compression, clutter lock, azimuth preprocessing and azimuth processing. this paper derives that multiplying 1 / 2 factor can avoid fixed - point overflow
該平臺能完成r - d演算法中的距離向脈沖壓縮、雜波鎖定、方位向預處理及方位處理功能本文針對定點分裂基fft演算法，推導出加入1 2衰減因子可以避免定點運算時產生的溢出。 -
2. the fast fixed - point algorithm has been studied. we firstly consider one unit algorithm, extracting one original signal every time under instantaneous mixtures model
先分析了一次分離出一個源信號的單源定點演算法，然後導出了分離多個源信號的演算法。 -
Since the multiplication calculation cost more chip area than add calculation and the floationg - point calculations are not efficiently implemented in custom hardware they were replaced by scaled fixed - point approximations. also the jpeg coding algorithm requires a substantial amount of memory
本設計只在dct變換部分實現了必要數目的乘法器，通過採用特定的量化表避免了在量化模塊中進行除法運算，大大減少了乘法器的數量。 -
The fifth chapter analyzes the fixed - point error of bp - based and normalized bp - based decoding algorithm, and gives the final simulation results of each decoding algorithm. with the simulation results and the considering the tradeoff between hardware complexity and error performance, some key parameters and finite precision analysis for the hardware implementation of ldpc decoder have been performed
第五章對bp - based和normalizedbp - based演算法進行了定點模擬，對ldpc譯碼器的關鍵參數、硬體實現中的定點量化與字長精度問題進行了深入的研究，給出了對譯碼器硬體實現具有參考意義的研究結果。 -
Focusing on the feature of vliw, optimized mpeg audio encoding algorithm fixed - point parallelized programe. practising the real - time encoding of mpeg layer ii based on map - cadsp
對mpeg音頻編碼演算法進行演算法的優化和定點化，從而可以在性價比較高的定點dsp上實現mpeg音頻編碼。 -
Thirdly dct is implemented using chen fast dct algorithm. we transform float - point arithmetic into fixed - point arithmetic, which meeting the precision requirements of the ieee 1180 standard, to accord with fixed - point c6201 dsps
隨后在dct變換編碼中，採用chen快速dct演算法，在保證idct精度符合ieee1180標準條件下，將浮點dct系數轉化為與c6201定點dsps運算單元相適應的定點系數。 -
The proposed algorithm transformation procedure from the float - point to fixed - point is discussed in chapter2
描述了浮點演算法到定點演算法的移植過程。 -
Finally we study a modified algorithm, which applies the fast fixed - point algorithm for complex signals to blind signals eparation in frequency domain. it ’ s a one - unit algorithm. to prevent converging to the same signal, the deflation algorithm is used to separate signals one by one
4 .結合上述卷積混合信號的頻域分離演算法，研究了一個改進單源演算法，將復數快速固定點演算法應用到頻域加速收斂，為了防止演算法收斂于同一信號，利用一種抽氣技術，這樣可一次分離出一個信號，實現卷積混合信號分離。 -
The relation of fft size and the length of reverberation in bss implementation in frequency domain and its influence on the performance of separation are investigated. 2. a new fixed - point ica algorithm is introduced into bss for audio mixtures, and an algorithm of bss based on fir matrix algebra with block implementation is given
本文嘗試將一種新的定點ica演算法用於分離多通道混合語音信號，給出了一種基於fir矩陣代數技術的時頻域的新演算法，實驗證明了演算法的有效性和較快的收斂速度。 -
( 1 ) the paper has studied the contractive mapping genetic algorithm, which can be converged to a global optimal solution proved by fixed - point theorem of banach space. it remedies the shortage of standard genetic algorithm. furthermore, the paper discusses the genetic operation in the algorithm such as the coding, select, cross over and mutation etc. it will be help to the next work about fusion with the neural network
本文融合神經網路技術和遺傳演算法，對軌道交通引起的地面振動進行了正分析和反演，並利用計算機技術實現了地面振動的三維動畫模擬，這主要包括： （ 1 ）研究了壓縮映射遺傳演算法，利用banach空間的不動點定理證明了壓縮映射遺傳演算法可以收斂到全局最優值，彌補了標準遺傳演算法不能收斂至全局最優值的不足。
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