JP5019598B2 - Reception processing device - Google Patents

Reception processing device Download PDF

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JP5019598B2
JP5019598B2 JP2007177635A JP2007177635A JP5019598B2 JP 5019598 B2 JP5019598 B2 JP 5019598B2 JP 2007177635 A JP2007177635 A JP 2007177635A JP 2007177635 A JP2007177635 A JP 2007177635A JP 5019598 B2 JP5019598 B2 JP 5019598B2
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知裕 井上
敏男 難波
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Description

この発明は、例えば、航空管制用の一次レーダ装置に用いられ、空中線装置により受信される受信信号を処理する受信処理装置に関する。   The present invention relates to a reception processing apparatus that is used in, for example, a primary radar apparatus for air traffic control and processes a reception signal received by an antenna apparatus.

航空管制用の一次レーダに設けられる空中線装置は、２つのビーム（ハイビームおよびロービーム）を持っており、高仰角に形成されるハイビームにより受信されるハイ信号と、低仰角に形成されるロービームにより受信されるロー信号を出力する。また、雨や雪からの反射波を抑圧して、航空機の反射信号のみを見やすくするために、雨天の際には直線偏波を円偏波に切り換え、ロー信号から雨や雪からの反射波を分離し、分離された信号をウェザ信号として出力する（例えば、非特許文献１を参照。）。
改訂 レーダ技術、社団法人 電子情報通信学会 The aerial device provided in the primary radar for air traffic control has two beams (high beam and low beam), and is received by a high signal received by a high beam formed at a high elevation angle and a low beam formed by a low elevation angle. Output a low signal. In addition, in order to suppress the reflected waves from rain and snow and make it easy to see only the reflected signals from the aircraft, the linearly polarized waves are switched to circularly polarized waves in the rain, and the reflected waves from rain and snow are switched from low signals. And the separated signal is output as a weather signal (see, for example, Non-Patent Document 1).
Revision Radar Technology, The Institute of Electronics, Information and Communication Engineers

ところが、従来では、上記受信された信号をアナログ信号の状態で分配したり、アナログスイッチを用いて切り換えを行っていたため、信号の電力損失や故障の要因となっていた。   However, conventionally, the received signal is distributed in the state of an analog signal, or switching is performed using an analog switch, which causes a signal power loss or failure.

この発明は上記事情に着目してなされたもので、その目的とするところは、受信信号の損失の低減および部品の削減によって信頼性を向上させる受信処理装置を提供することにある。   The present invention has been made paying attention to the above circumstances, and an object of the present invention is to provide a reception processing apparatus that improves reliability by reducing loss of received signals and reducing parts.

上記目的を達成するためにこの発明に係る受信処理装置は、ハイビーム、ロービーム、を形成し、直線偏波と円偏波を切り換えて目標信号を受信するレーダ装置に用いられ、ハイビームにより受信されたハイ信号と、ロービームにより受信されたロー信号と、円偏波使用時にロー信号から分離されるウェザ信号とを出力する空中線装置と、前記出力されたハイ信号、ロー信号、及びウェザ信号それぞれをデジタル信号に変換する変換回路と、前記デジタル変換されたロー信号を分配する分配回路と、前記デジタル変換されたハイ信号と前記分配回路により分配されたデジタル変換されたロー信号とを切り換えていずれかの信号を出力するハイ／ロー切換回路と、前記デジタル変換されたウェザ信号と前記分配回路により分配されたデジタル変換されたロー信号とを切り換えていずれかの信号を出力するウェザ／ロー切換回路と、前記ハイ／ロー切換回路により出力されるハイ信号又はロー信号に対して信号処理を行うハイ／ロー信号処理回路と、前記ウェザ／ロー切換回路により出力されるウェザ信号又はロー信号に対して信号処理を行うウェザ／ロー信号処理回路とを具備することを特徴とする。   In order to achieve the above object, a reception processing apparatus according to the present invention forms a high beam and a low beam, is used in a radar apparatus that receives a target signal by switching between linear polarization and circular polarization, and is received by a high beam. An antenna device that outputs a high signal, a low signal received by a low beam, and a weather signal that is separated from the low signal when circularly polarized light is used, and digitally outputs each of the output high signal, low signal, and weather signal. A conversion circuit for converting into a signal, a distribution circuit for distributing the digitally converted low signal, and switching between the digitally converted high signal and the digitally converted low signal distributed by the distribution circuit A high / low switching circuit for outputting a signal, the digitally converted weather signal, and the digital signal distributed by the distribution circuit; A weather / low switching circuit for switching one of the generated low signals to output one of the signals, and a high / low signal processing circuit for performing signal processing on a high signal or a low signal output by the high / low switching circuit And a weather / low signal processing circuit for performing signal processing on the weather signal or the low signal output by the weather / low switching circuit.

上記構成による受信処理装置では、空中線装置から出力されるハイ信号、ロー信号、ウェザ信号は平行してデジタル信号にそれぞれ変換される。デジタル変換後にロー信号は分配されるが、デジタル処理上での分配のため信号の電力を損失させることなく分配できる。分配後のロー信号は、ハイ／ロー切換回路，ウェザ／ロー切換回路へそれぞれ入力されるが、デジタル上の処理であるため、使用時間により劣化する部品を使用する必要がなく安定した動作を行うことが可能である。   In the reception processing apparatus having the above configuration, the high signal, the low signal, and the weather signal output from the antenna apparatus are respectively converted into digital signals in parallel. Although the low signal is distributed after the digital conversion, it can be distributed without losing the power of the signal due to the distribution on the digital processing. The low signal after distribution is input to the high / low switching circuit and the weather / low switching circuit, respectively. However, since it is a digital process, it is not necessary to use a component that deteriorates depending on the usage time, and performs stable operation. It is possible.

したがってこの発明によれば、受信信号の損失の低減および部品の削減によって信頼性を向上させる受信処理装置を提供することができる。   Therefore, according to the present invention, it is possible to provide a reception processing apparatus that improves the reliability by reducing the loss of received signals and reducing the number of components.

以下、図面を参照しながら本発明の実施の形態を詳細に説明する。
図１は、この発明に係る受信処理装置を用いたレーダ装置の一実施形態を示す構成図である。
このレーダ装置は、ハイ（ＨＩＧＨ）、ロー（ＬＯＷ）、ウェザ（ＷＸ）の３系統の信号が出力する空中線装置１と、周波数変換回路２１，２２，２３と、ＡＤ回路３１，３２，３３と、分配回路４と、ハイ／ロー切換回路５１と、ウェザ／ロー切換回路５２と、ハイ／ロー切換制御回路６１と、ウェザ／ロー切換制御回路６２と、ハイ／ロー信号処理回路７１と、ウェザ／ロー信号処理回路７２とを備える。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a configuration diagram showing an embodiment of a radar apparatus using a reception processing apparatus according to the present invention.
The radar apparatus includes an antenna apparatus 1 that outputs three signals of high (HIGH), low (LOW), and weather (WX), frequency conversion circuits 21, 22, and 23, and AD circuits 31, 32, and 33. Distribution circuit 4, high / low switching circuit 51, weather / low switching circuit 52, high / low switching control circuit 61, weather / low switching control circuit 62, high / low signal processing circuit 71, weather / Low signal processing circuit 72.

空中線装置１から出力されたハイ信号、ロー信号、ウェザ信号はそれぞれ周波数変換回路２１，２２，２３に入力され、ＲＦ周波数からＩＦ周波数に変換される。ハイ信号、ロー信号、ウェザ信号はＩＦ周波数に変換された後、ＡＤ回路３１，３２，３３によりそれぞれデジタル信号に変換される。デジタル変換後にロー信号は分配回路４により分配され、ハイ／ロー切換回路５１とウェザ／ロー切換回路５２とにそれぞれ入力される。   The high signal, the low signal, and the weather signal output from the antenna apparatus 1 are input to the frequency conversion circuits 21, 22, and 23, respectively, and converted from the RF frequency to the IF frequency. The high signal, the low signal, and the weather signal are converted into IF signals, and then converted into digital signals by the AD circuits 31, 32, and 33, respectively. After digital conversion, the low signal is distributed by the distribution circuit 4 and input to the high / low switching circuit 51 and the weather / low switching circuit 52, respectively.

また、ハイ信号はハイ／ロー切換回路５１へ、ウェザ信号はウェザ／ロー切換回路５２にそれぞれ入力される。ハイ／ロー切換回路５１は、ハイ／ロー切換制御回路６１からの制御信号に従い、ハイ信号とロー信号のいずれかを選択して出力する。ウェザ／ロー切換回路５２は、ウェザ／ロー切換制御回路６２からの制御信号に従い、ウェザ信号とロー信号のいずれかを選択して出力する。ハイ／ロー切換回路５１の出力信号は、ハイ／ロー信号処理回路７１において検出処理される。また、ウェザ／ロー切換回路５２の出力信号はウェザ／ロー信号処理回路７２において検出処理を行う。   The high signal is input to the high / low switching circuit 51, and the weather signal is input to the weather / low switching circuit 52. The high / low switching circuit 51 selects and outputs either a high signal or a low signal in accordance with a control signal from the high / low switching control circuit 61. The weather / low switching circuit 52 selects and outputs either the weather signal or the low signal in accordance with the control signal from the weather / low switching control circuit 62. The output signal of the high / low switching circuit 51 is detected and processed by the high / low signal processing circuit 71. Further, the weather / low signal processing circuit 72 detects the output signal of the weather / low switching circuit 52.

図２に、従来の受信処理装置の構成の一例を示す。
空中線装置２１０から出力されたロー信号はアナログ信号のままで分配回路２２０により分配され、ハイ／ロー切換回路２３１とウェザ／ロー切換回路２３２に入力される。また、ハイ信号はハイ／ロー切換回路２３１へ、ウェザ信号はウェザ／ロー切換回路２３２へ入力される。 FIG. 2 shows an example of the configuration of a conventional reception processing apparatus.
The low signal output from the antenna device 210 is distributed by the distribution circuit 220 as an analog signal and is input to the high / low switching circuit 231 and the weather / low switching circuit 232. The high signal is input to the high / low switching circuit 231 and the weather signal is input to the weather / low switching circuit 232.

ハイ／ロー切換回路２３１では、ハイ／ロー切換制御回路２４１からの制御信号に従い、ハイ信号とロー信号のいずれかを選択して出力する。ウェザ／ロー切換回路２３２では、ウェザ／ロー切換制御回路２４２からの制御信号に従い、ウェザ信号とロー信号のいずれかを選択して出力する。ハイ／ロー切換回路２３１およびウェザ／ロー切換回路２３２の出力信号はそれぞれ周波数変換回路２５１，２５２に入力され、ＲＦ周波数からＩＦ周波数に変換される。その後、それぞれＡＤ回路２６１，２６２でデジタル変換後、ハイ／ロー信号処理回路２７１およびウェザ／ロー信号処理回路２７２において検出処理を行う。   The high / low switching circuit 231 selects and outputs either a high signal or a low signal in accordance with a control signal from the high / low switching control circuit 241. The weather / low switching circuit 232 selects and outputs either the weather signal or the low signal in accordance with the control signal from the weather / low switching control circuit 242. The output signals of the high / low switching circuit 231 and the weather / low switching circuit 232 are respectively input to the frequency conversion circuits 251 and 252 and converted from the RF frequency to the IF frequency. Thereafter, after digital conversion by the AD circuits 261 and 262, respectively, the high / low signal processing circuit 271 and the weather / low signal processing circuit 272 perform detection processing.

ここで、上記受信処理装置では、分配回路２２０によりロー信号の分配をデジタル変換前に行うため、ハイ信号、ウェザ信号と比較してロー信号のみ損失が発生していた。また、ハイ／ロー切換回路２３１およびウェザ／ロー切換回路２３２においてスイッチを用いて切り換えるため、故障要因となる部品が使われていた。   Here, in the above reception processing apparatus, since the low signal is distributed by the distribution circuit 220 before digital conversion, only the low signal is lost as compared with the high signal and the weather signal. In addition, since the high / low switching circuit 231 and the weather / low switching circuit 232 are switched using switches, parts that cause failure are used.

これに対し上記実施形態では、空中線装置１から出力されるハイ信号、ロー信号、ウェザ信号は平行して周波数変換回路２１，２２，２３およびＡＤ回路３１，３２，３３を経由してデジタル信号にそれぞれ変換される。デジタル変換後にロー信号は分配されるが、デジタル処理上での分配のため信号電力を損失させることなく分配できる。分配後のロー信号は、ハイ／ロー切換回路５１，ウェザ／ロー切換回路５２へそれぞれ入力されるが、デジタル上の処理であるため、使用時間により劣化する部品を使用する必要がなく安定した動作を行うことが可能である。   On the other hand, in the above embodiment, the high signal, low signal, and weather signal output from the antenna device 1 are converted into digital signals via the frequency conversion circuits 21, 22, 23 and the AD circuits 31, 32, 33 in parallel. Each is converted. Although the low signal is distributed after the digital conversion, it can be distributed without losing the signal power due to the distribution on the digital processing. The low signal after distribution is input to the high / low switching circuit 51 and the weather / low switching circuit 52, respectively. However, since it is a digital process, it is not necessary to use a component that deteriorates depending on the usage time, and the operation is stable. Can be done.

したがって、上記実施形態によれば、受信信号の損失の低減および部品の削減によって信頼性を向上させることが可能となる。   Therefore, according to the above embodiment, it is possible to improve the reliability by reducing the loss of the received signal and reducing the number of parts.

なお、この発明は、上記実施形態そのままに限定されるものではなく、実施段階ではその要旨を逸脱しない範囲で構成要素を変形して具体化できる。また、上記実施形態に開示されている複数の構成要素の適宜な組み合せにより種々の発明を形成できる。例えば、実施形態に示される全構成要素から幾つかの構成要素を削除してもよい。さらに、異なる実施形態に亘る構成要素を適宜組み合せてもよい。   Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

この発明に係る受信処理装置の一実施形態を示す構成図。The block diagram which shows one Embodiment of the reception processing apparatus which concerns on this invention. 従来の受信処理装置の構成の一例を示す図。The figure which shows an example of a structure of the conventional reception processing apparatus.

符号の説明Explanation of symbols

１…空中線装置、２１，２２，２３…周波数変換装置、３１，３２，３３…ＡＤ回路、４…分配回路、５１…ハイ／ロー切換回路、５２…ウェザ／ロー切換回路、６１…ハイ／ロー切換制御回路、６２…ウェザ／ロー切換制御回路、７１…ハイ／ロー信号処理回路、７２…ウェザ／ロー信号処理回路。   DESCRIPTION OF SYMBOLS 1 ... Antenna apparatus, 21, 22, 23 ... Frequency converter, 31, 32, 33 ... AD circuit, 4 ... Distribution circuit, 51 ... High / low switching circuit, 52 ... Weather / low switching circuit, 61 ... High / low Switching control circuit, 62 ... weather / low switching control circuit, 71 ... high / low signal processing circuit, 72 ... weather / low signal processing circuit.

Claims (1)

ハイビーム、ロービームを形成し、直線偏波と円偏波を切り換えて目標信号を受信するレーダ装置に用いられ、
ハイビームにより受信されたハイ信号と、ロービームにより受信されたロー信号と、円偏波使用時にロー信号から分離されるウェザ信号とを出力する空中線装置と、
前記出力されたハイ信号、ロー信号、及びウェザ信号それぞれをデジタル信号に変換する変換回路と、
前記デジタル変換されたロー信号を分配する分配回路と、
前記デジタル変換されたハイ信号と前記分配回路により分配されたデジタル変換されたロー信号とを切り換えていずれかの信号を出力するハイ／ロー切換回路と、
前記デジタル変換されたウェザ信号と前記分配回路により分配されたデジタル変換されたロー信号とを切り換えていずれかの信号を出力するウェザ／ロー切換回路と、
前記ハイ／ロー切換回路により出力されるハイ信号又はロー信号に対して信号処理を行うハイ／ロー信号処理回路と、
前記ウェザ／ロー切換回路により出力されるウェザ信号又はロー信号に対して信号処理を行うウェザ／ロー信号処理回路と
を具備することを特徴とする受信処理装置。 Used in radar equipment that forms a high beam and a low beam and receives a target signal by switching between linearly polarized waves and circularly polarized waves,
An antenna device that outputs a high signal received by a high beam, a low signal received by a low beam, and a weather signal separated from the low signal when using circularly polarized waves,
A conversion circuit for converting each of the output high signal, low signal, and weather signal into a digital signal;
A distribution circuit for distributing the digitally converted low signal;
A high / low switching circuit that switches between the digitally converted high signal and the digitally converted low signal distributed by the distribution circuit and outputs any one of the signals;
A weather / low switching circuit that switches between the digitally converted weather signal and the digitally converted low signal distributed by the distribution circuit and outputs either signal;
A high / low signal processing circuit for performing signal processing on a high signal or a low signal output by the high / low switching circuit;
A reception processing apparatus comprising: a weather / low signal processing circuit that performs signal processing on a weather signal or a low signal output by the weather / low switching circuit.
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JPS57125864A (en) * 1981-01-29 1982-08-05 Toshiba Corp Antenna device
JPS6488388A (en) * 1987-09-30 1989-04-03 Toshiba Corp Radar equipment
KR920008508A (en) * 1990-10-10 1992-05-28 엔.라이스 머레트 Digital Radar System and Method
US5077562A (en) * 1990-12-24 1991-12-31 Hughes Aircraft Company Digital beam-forming technique using temporary noise injection
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