For it has many unique advantages, pseudo-noise linear m-sequence binary phased coded cw signal is widely used in the new generation air defense systems 偽隨機m序列相位編碼連續(xù)波信號體制由于其固有的優(yōu)點,在新一代地空制導雷達中得到了廣泛的應用。
Detection performance and anti-jamming capability of phase-coded radar are also analyzed in this paper . the computer simulation shows that phase-coded radar has better property of suppressing jamming such as shortwave, gauss noise and binary phase code than lfm radar 本文還分析了相位編碼雷達的檢測性能和抗干擾能力,仿真結(jié)果顯示相位編碼雷達抗短波、高斯白噪聲、二相碼等干擾的能力優(yōu)于線性調(diào)頻雷達。
At first the merits and implementation of the digital pulse compression subsystem are introduced in this paper . then the characteristics of phase coded signals are discussed and the two classic binary phase codes ? ? barker code and m-sequence are dealt with in details in the following 文中首先綜述了數(shù)字脈沖壓縮的優(yōu)點及其實現(xiàn)方法,接著討論了相位編碼信號的特點,并詳細分析了巴克碼和m序列這兩類典型的二相碼信號。
A high-resolution method for frequency measurement is strongly introduced in the paper, which is aim at detecting the frequency of regular and binary phase coding modulated pulse signals with high frequency precision . considering the popularity of linear frequency modulated ( lfm ) signal in electronic systems, this paper then referred a radon-stft arithmetic to calculate the carry frequency of lfm signal . both of these methods referred above are implemented in the signal if detection software 針對常規(guī)脈沖調(diào)制信號和脈內(nèi)二相編碼調(diào)制信號,本文提出一種高精度的數(shù)字化測頻方法,以提高信號載頻測量精度;線性調(diào)頻信號作為一種典型的非平穩(wěn)信號在各種領(lǐng)域應用十分廣泛,但對其載頻的數(shù)字化測量比較困難,本文利用圖像處理中的radon變換與信號時頻分析中的線性變換相結(jié)合的算法來完成對其載頻的測量。