發(fā)布時間：2018-06-15 18:29

  本文選題：雷達式通信 + 波形方案��； 參考：《哈爾濱工業(yè)大學(xué)》2015年碩士論文

【摘要】：突飛猛進的科技發(fā)展與進步,現(xiàn)有作戰(zhàn)平臺面臨的挑戰(zhàn)越來越多。面臨眾多的威脅,大量的雷達與通信設(shè)備被加載到作戰(zhàn)平臺上。鑒于雷達與通信兩系統(tǒng)兼容性,為了提高作戰(zhàn)平臺的機動性和輕便性,雷達通信一體化的研究日趨深入。日前,雷達通信一體化系統(tǒng)已經(jīng)逐漸滲透到軍用、民用等各個領(lǐng)域。在分析雷達與通信異同和實現(xiàn)機制前提下,給出實現(xiàn)雷達式通信的具體方式,使一體化系統(tǒng)分時或分波束完成雷達探測功能和通信系統(tǒng)信息傳輸功能。同時,歸納一體化系統(tǒng)的發(fā)展及其波形方案的研究現(xiàn)狀,分析得知其均沒有考慮到高速移動平臺下多普勒頻移對雷達式通信的影響。因此,本文重點是針對高速移動平臺設(shè)計可靠有效的雷達式通信波形方案�；诙嗥绽疹l移對雷達式通信的影響,分析傳統(tǒng)抗頻移算法并仿真比較,給出一種雙差分對抗多普勒頻移的方法。之后從理論上推導(dǎo)雙差分對抗頻移和噪聲性能。結(jié)合實際工程應(yīng)用,提出改進相位法來實現(xiàn)雙差分,并仿真分析其性能。參考IEEE802.11,提出了雙差分技術(shù)分別結(jié)合單載波調(diào)制、多載波調(diào)制以及擴頻調(diào)制的雷達式通信波形方案。對于雙差分技術(shù)結(jié)合單載波調(diào)制方案,分析BPSK、QPSK、8PSK分別結(jié)合雙差分技術(shù)的性能;對于雙差分技術(shù)結(jié)合多載波調(diào)制方案,分析OFDM調(diào)制在不同子載波數(shù)、不同基帶調(diào)制方式時結(jié)合雙差分技術(shù)的性能;對于雙差分技術(shù)結(jié)合擴頻調(diào)制方案,分析直接序列擴頻、正交補碼鍵控、分組二進制卷積碼三種擴頻方式分別結(jié)合雙差分技術(shù)的性能。除對方案理論說明外,還基于Matlab、GNU Radio軟件平臺分別對其抗頻移和噪聲性能進行仿真比較和實際測試,最后給出它們的應(yīng)用條件。綜上表明,一體化系統(tǒng)采用的上述不同方案,在保障高速移動平臺下可靠有效雷達式通信時,其所需要信噪比及能達到的通信速率均不同,從而應(yīng)用場合也不同。因此一體化系統(tǒng)可根據(jù)實際情況,自適應(yīng)地從上述備選方案中選取最優(yōu)波形方案,以滿足對應(yīng)高速運動環(huán)境中不同性能指標(biāo)的雷達式通信需求。
[Abstract]:With the rapid development and progress of science and technology, the existing combat platforms are facing more and more challenges. In the face of many threats, a large number of radar and communications equipment has been loaded into the combat platform. In view of the compatibility between radar and communication systems, in order to improve the maneuverability and portability of combat platform, the research of radar communication integration is getting deeper and deeper. A few days ago, radar communication integration system has gradually penetrated into military, civilian and other fields. On the premise of analyzing the similarities and differences between radar and communication and the realization mechanism, this paper gives the concrete way of realizing radar communication, which makes the integrated system complete radar detection function and communication system information transmission function by time-sharing or beam-sharing. At the same time, the development of integrated system and the research status of waveform scheme are summarized, and it is found that the influence of Doppler frequency shift on radar communication under high-speed mobile platform has not been taken into account. Therefore, this paper focuses on designing a reliable and effective radar communication waveform scheme for high-speed mobile platform. Based on the influence of Doppler frequency shift on radar communication, the traditional anti-Doppler frequency shift algorithm is analyzed and compared with simulation. Then, the frequency shift and noise performance of double differential countermeasure are deduced theoretically. Combined with practical engineering application, an improved phase method is proposed to realize double difference, and its performance is analyzed by simulation. Referring to IEEE 802.11, a radar waveform scheme combining single-carrier modulation, multi-carrier modulation and spread spectrum modulation is proposed. For the double differential technique combined with the single carrier modulation scheme, the performance of the BPSKO QPSK 8PSK combined with the double differential technique is analyzed, and for the dual differential technique combined with the multi-carrier modulation scheme, the number of OFDM modulation in different subcarriers is analyzed. The performance of combining double difference technique with different baseband modulation methods, and analyzing the direct sequence spread spectrum, orthogonal complementary code keying for the double differential technique combined with spread spectrum modulation scheme, The performance of block binary convolutional code with three spread spectrum methods combined with double differential technique respectively. In addition to the theoretical explanation of the scheme, the performance of anti-frequency shift and noise is simulated and tested based on Matlab GNU Radio software platform. Finally, their application conditions are given. It is shown that the different schemes used in the integrated system can guarantee reliable and effective radar communication under the high-speed mobile platform, the SNR and the communication rate are different, so the application situation is different. Therefore, the integrated system can adaptively select the optimal waveform scheme from the above options according to the actual situation, in order to meet the radar communication requirements corresponding to different performance indicators in the high-speed moving environment.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN957.53

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本文編號：2023092