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31. We take anti - jamming measures with emergency of sign faintness and SNR decrease for long distance measure.

32. In pulse modulation identification is one of radar reconnaissance key technology. Especially, in pulse modulation identification under low SNR is a hot point of recent researching.

33. In order to improve the detecting ability and detection probability of the laser ranger, the Signal Noise Ratio(SNR) of the return signal is to be increased.

34. The AD7762 is ideal for applications demanding high SNR without necessitating design of complex front end signal processing.

35. The simulation results indicate under multipath channel for low SNR, the new algorithm has lower probability of failure than the conventional algorithm by adopting proper training symbols.

36. It is demonstrated that ML estimating error can converge to CRB quickly with increasing synthetic aperture length and Signal to Noise Ratio(SNR), but a threshold effect exists.

37. Furthermore, it can avoid the feedback of the zero-order diffraction beam so as to improve the SNR of the encoder output.

38. We receive the laser pulse signal with the binary photo-electric detector, deal the signal with the circuit designed on the basis of correlation detection to improve SNR.

39. The benefits of large effective area fibers are higher power handling capability for improved system signal to noise ratio (SNR), and longer amplifier spacing.

40. It affects the SNR signal - to - noise ratio and the THD ( total harmonic distortion ) of a conversion.

41. Range gating is a kind of effective method that can eliminate backscattered light and increase the SNR of the range gated laser imaging system.

42. It is showed that the optimal mode number was associated to the signal to noise ratio (SNR), and the Hartmann sensor was suffered from measurement noise severely in the condition of weak turbulence.

43. In addition, the using condition of correlation detector and the relationship between the normalized correlation detector and SNR (signal noise ratio) are discussed in this paper.

44. Range subsection weighting technology is used to minish SNR loss caused by weighting, so as to increase radar range.

44. Sentencedict.com is a sentence dictionary, on which you can find excellent sentences for a large number of words.

45. With this approach, we can detect the number of(M-1) coherent signals with M sensors under a lower signal to noise ratio(SNR) and a smaller sampling number.

46. The proposed method may estimate Doppler rate robustly in the case of low SNR.

47. However, the active imaging method, which has a relatively low SNR, generates a relatively high distance resolution.

48. The relationships between computational method of system SNR and the wrong alarm ratio were analyzed.

49. The HMM based multiple frequency line tracking algorithms of work well under very low SNR, except for a high complexity of computation and for generally unnegligible quantization error.

50. The amplitude modulated wave with any modulation factor is discussed in this paper. Its expression, spectrum and formula of the modulation factor, modulation efficiency, SNR gain are given.

51. Bandwidth of the sensor is 300 MHz with SNR 50.

52. In the low SNR condition of radiometer, the usual generalized solution of the inverse problem may be completely corrupted by noise and therefore completely deprived of the exact solution.

53. Experimental results show that low frequency pulse compression and channel match method can be used in shallow water sound channel to improve the SNR.

54. On the basis of considering the modules of laser radar equation, SNR and AGC, imaging demand, noise and imaging proces, we make a simulation of pulsed coherent imaging laser radar for moving target.

55. The pivotal thinking of VWDK is to make the difference of two modulation waves minimum, which makes coherent detection more difficult, then results in poor SNR performance.

56. A variable step-size algorithm is used in adaptive line spectrum enhancement (ALE) to enhance the line spectrum so that SNR is enhanced.

57. The output signal - to - noise ratio ( SNR ) in an additive white Gaussian noise ( AWGN ) channel is calculated.

58. The SNR, the antenna condition and the Bragg condition as well as achromatism in optical design are discussed.

59. Range gating is a kind of effective method which can eliminate backscattered light and increase the SNR of the laser range gated (LRG) imaging system.

60. In the space solar telescope(SST), the image integration method is used to increase signal-to-noise ratio(SNR)of the solar magnetic field images.