JPH095416A - Direction finder - Google Patents
Direction finderInfo
- Publication number
- JPH095416A JPH095416A JP15786995A JP15786995A JPH095416A JP H095416 A JPH095416 A JP H095416A JP 15786995 A JP15786995 A JP 15786995A JP 15786995 A JP15786995 A JP 15786995A JP H095416 A JPH095416 A JP H095416A
- Authority
- JP
- Japan
- Prior art keywords
- delay
- azimuth
- antenna
- output
- radio waves
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明はESM(Electr
onic Support Measure:電波探知
機能)の能力を向上させた方位探知装置に関するもので
ある。This invention relates to ESM (Electr)
The present invention relates to an azimuth detecting device having improved capability of "onic Support Measure" (radio wave detecting function).
【0002】[0002]
【従来の技術】図8は従来の方位探知装置を示す。図に
おいて、1a〜1dは到来電波を受信する例えば北方位
向、東方位向、南方位向、西方位向にそれぞれ設置した
指向性空中線である。2a〜2dは1(1a〜1d)で
受信した電波を受信機へ伝える給電線、7a〜7dは、
1で受信した電波をビデオに変換する受信機、8a〜8
dは、7(7a〜7d)の受信機で求めたビデオを信号
処理器へ伝えるケーブル、9は各受信機出力ビデオから
到来方位を求める信号処理器である。また、図9は図8
の構成の方位探知装置の動作を説明する受信成度図であ
る。2. Description of the Related Art FIG. 8 shows a conventional direction finding device. In the figure, 1a to 1d are directional antennas that receive incoming radio waves and are installed in, for example, north direction, east direction, south direction, and west direction. 2a to 2d are power supply lines for transmitting the electric wave received at 1 (1a to 1d) to the receiver, and 7a to 7d are
Receivers for converting radio waves received in 1 into video, 8a-8
d is a cable for transmitting the video obtained by the receivers 7 (7a to 7d) to the signal processor, and 9 is a signal processor for obtaining the direction of arrival from the video output from each receiver. Also, FIG.
FIG. 3 is a reception succession diagram explaining the operation of the azimuth detecting apparatus having the above configuration.
【0003】次に上記装置の動作について説明する。複
数の指向性空中線1を指向方向が重ならない様に北、
東、南、西向に配置する。図9はその際の北向の空中線
を基準にした受信感度を示した図である。この時の各指
向性空中線の受信電力パターンは、31a、31b、3
1c、31dとなる。電波が→で示す方向から到来する
と、31aと31bでは受信不可であるが、31cと3
1dでは、各々、32と33の電力で受信できる。指向
性空中線1で受信した電波は、各指向性空中線対応の受
信機7でマイクロ波からビデオに変換される。変換され
た各ビデオは、ケーブル8を経由して、信号処理器9へ
入力され、各ビデオの振幅差から到来方位を求める。次
に、ビデオの振幅差から到来方位を求める処理を説明す
る。各ビデオ振幅を比較して、振幅の一番大きいビデオ
(系)を求める。これは、到来方位の粗方位に該当す
る。図9の例では、この電波の到来の粗方位のアンテナ
受信電力が33のアンテナ受信電力より大きいので、3
1cパターンを持つ指向性空中線の取付方位、つまり南
方位と判る。さらに、ビデオ振幅の2番目に大きいビデ
オ(系)を求め、この2つのビデオ差を求める。このビ
デオ差から、事前に測定されている各指向性空中線1の
指向パターンから相対的方位を求め、先の粗方位と加算
することで到来方位の精方位(粗方位よりも確度の高い
方位)が求まる。即ち32と33のレベル差から到来方
位の精方位を求める。具体的には31とcと31dのパ
ターン差と相対角度とを事前に設定しておき、32−3
3のレベル差に該当する相対角度を求める。よって、到
来方位=31取付角度+(32−33)該当の相対角度
となる。Next, the operation of the above device will be described. North of multiple directional antennas 1 so that the pointing directions do not overlap.
Place in the east, south, and west directions. FIG. 9 is a diagram showing the receiving sensitivity based on the north-facing antenna at that time. The received power pattern of each directional antenna at this time is 31a, 31b, 3
1c and 31d. When a radio wave arrives from the direction indicated by →, it cannot be received by 31a and 31b, but 31c and 3
In 1d, the power of 32 and 33 can be received, respectively. The radio waves received by the directional antenna 1 are converted from microwaves to video by the receiver 7 corresponding to each directional antenna. Each converted video is input to the signal processor 9 via the cable 8 and the arrival direction is obtained from the amplitude difference of each video. Next, the process of obtaining the arrival direction from the video amplitude difference will be described. The respective video amplitudes are compared and the video (system) with the largest amplitude is obtained. This corresponds to the rough direction of the arrival direction. In the example of FIG. 9, since the antenna reception power in the rough direction of arrival of this radio wave is larger than the antenna reception power of 33, 3
It can be known as the mounting direction of the directional antenna having the 1c pattern, that is, the south direction. Further, the video (system) having the second largest video amplitude is obtained, and the difference between these two videos is obtained. From this video difference, the relative azimuth is obtained from the directional pattern of each directional antenna 1 that has been measured in advance, and the relative azimuth is added to the previous rough azimuth to obtain the precise azimuth of the incoming azimuth (direction with higher accuracy than the rough azimuth). Is required. That is, the precise direction of the arrival direction is obtained from the level difference between 32 and 33. Specifically, the pattern difference between 31 and c and 31d and the relative angle are set in advance, and 32-3
The relative angle corresponding to the level difference of 3 is obtained. Therefore, the arrival azimuth = 31 mounting angle + (32-33) becomes the corresponding relative angle.
【0004】[0004]
【発明が解決しようとする課題】従来の方位探知装置は
以上のように構成されているので各系のビデオ差が直接
方位誤差になるので、指向性空中線1、給電線2、受信
機3、ケーブル4の特性を揃えることが必要で、また、
検出方位誤差が大きくなった時の故障部位の探求が困難
であるなどの課題があった。Since the conventional azimuth detecting device is constructed as described above, since the video difference of each system directly becomes the azimuth error, the directional antenna 1, the feeder line 2, the receiver 3, It is necessary to match the characteristics of the cable 4, and
There was a problem that it was difficult to search for the faulty part when the detection direction error became large.
【0005】この発明は、上記のような課題を解消する
ためになされたもので、回路部品数を削減できるととも
に、試験時間の短縮及び、故障部位を容易に探求できる
装置を得ることを目的としており、さらに、安価な方位
探知装置を得ることを目的とする。The present invention has been made to solve the above problems, and an object thereof is to obtain a device capable of reducing the number of circuit components, shortening the test time, and easily searching for a failed portion. In addition, the present invention aims to obtain an inexpensive direction finding device.
【0006】[0006]
【課題を解決するための手段】この発明に係る方位探知
装置は、所定の方向に指向性を持つアンテナと、このア
ンテナ出力を対応した所定の時間だけ遅延させる遅延素
子とを組とし、この組毎にそれぞれ異なる方向と異なる
遅延時間を設定した複数の組と、これら各組の出力を混
合する混合器と、この混合器出力の受信電波の振幅差か
ら方位を検出する信号処理手段を備えた。An azimuth detecting apparatus according to the present invention comprises a set of an antenna having directivity in a predetermined direction and a delay element for delaying the output of the antenna by a predetermined time corresponding thereto. A plurality of groups each having a different direction and a different delay time set for each, a mixer for mixing the outputs of these groups, and a signal processing means for detecting the azimuth from the amplitude difference of the received radio waves of the mixer output are provided. .
【0007】また更に、基本構成において各遅延素子の
遅延量を可変にした。Furthermore, the delay amount of each delay element is made variable in the basic configuration.
【0008】また更に、各遅延素子の遅延量を外部制御
により可変にした。Furthermore, the delay amount of each delay element is made variable by external control.
【0009】または、所定の方向に指向性を持つアンテ
ナと、このアンテナ出力を対応した所定の時間だけ遅延
させる遅延素子とを組とし、この組毎にそれぞれ異なる
方向と異なる遅延時間を設定した複数の組と、これら各
組の出力を時間的に切り換える切換スイッチと、この切
換スイッチ出力の受信電波の振幅差から方位を検出する
信号処理手段を備えた。Alternatively, an antenna having directivity in a predetermined direction and a delay element that delays the output of the antenna by a predetermined time corresponding thereto are set as a set, and a plurality of sets each having a different direction and a different delay time are set for each set. , A changeover switch for changing over the output of each set with respect to time, and a signal processing means for detecting the azimuth from the amplitude difference of the received radio waves of the changeover switch output.
【0010】また更に、受信電波の振幅を検出、増幅し
て信号処理手段に出力する1つの受信機を設けた。Further, one receiver for detecting and amplifying the amplitude of the received radio wave and outputting it to the signal processing means is provided.
【0011】[0011]
【作用】この発明による方位探知装置は、異なる方向に
指向性を持つアンテナに入射した電波が異なる時間だけ
順次遅延して混合され、この混合器出力は順次異なる方
向からの受信電波であり、その受信電波の振幅差から方
位が検出される。In the azimuth detecting apparatus according to the present invention, the radio waves incident on the antenna having directivity in different directions are sequentially delayed and mixed for different times, and the output of the mixer is the radio waves received from different directions. The azimuth is detected from the amplitude difference between the received radio waves.
【0012】また更に、各遅延素子の遅延量は可変に設
定され、到来電波が重ならないようその遅延量が調整さ
れる。Furthermore, the delay amount of each delay element is variably set, and the delay amount is adjusted so that incoming radio waves do not overlap.
【0013】また更に、その際の各遅延素子の遅延量は
外部制御により重ならないように調整される。Furthermore, the delay amount of each delay element at that time is adjusted by external control so that they do not overlap.
【0014】または、異なる方向に指向性を持つアンテ
ナに入射した電波が異なる時間だけ順次遅延して切換ら
れ、この切換られた出力は対応して異なる方向からの受
信電波であり、その振幅差から方位が検出される。Alternatively, the radio waves incident on the antenna having directivity in different directions are sequentially delayed by different times and switched, and the switched outputs are correspondingly received radio waves from different directions. The azimuth is detected.
【0015】また更に、受信機は1つであり、異なる方
向からの受信電波は1つの受信機で増幅され、その振幅
差から方位が検出される。Furthermore, the number of receivers is one, and received radio waves from different directions are amplified by one receiver, and the azimuth is detected from the amplitude difference.
【0016】[0016]
実施例1.本発明は、異なる方位に向けて設置された指
向性空中線(アンテナ)が受信した受信電波の強度を比
較し、その振幅強度から受信電波の方向を求める。この
際、出来るだけ構成を簡単にすることを目的とする。以
下、この発明の一実施例の方位探知装置をその構成図の
図1について説明する。図1において1a〜1dは指向
性空中線、2a〜2dは給電線、3a〜3dは指向性空
中線1(1a、1b、1c、1d)で受信した信号を遅
延させる遅延線であり、3a、3b、3c、3dの各遅
延量は異なっている。4a〜4dは給電線、5は、各遅
延線の出力を併合するコンバイナ(混合器)、6は給電
線、7はコンバイナ出力をビデオ信号に変換する受信
機、8は給電線、9は受信機出力のビデオ信号から到来
方位を求める信号処理器である。Embodiment 1 FIG. The present invention compares the intensities of received radio waves received by directional antennas (antennas) installed in different azimuths, and obtains the direction of the received radio waves from the amplitude intensity. At this time, the purpose is to simplify the configuration as much as possible. An azimuth detecting apparatus according to an embodiment of the present invention will be described below with reference to FIG. In FIG. 1, 1a to 1d are directional antennas, 2a to 2d are feeder lines, 3a to 3d are delay lines for delaying signals received by the directional antenna 1 (1a, 1b, 1c, 1d), and 3a and 3b. The delay amounts of 3c and 3d are different. 4a to 4d are power supply lines, 5 is a combiner that mixes the outputs of the delay lines, 6 is a power supply line, 7 is a receiver that converts the combiner output to a video signal, 8 is a power supply line, and 9 is a reception line. It is a signal processor that determines the direction of arrival from the video signal output from the machine.
【0017】上記構成の方位探知装置の動作を説明す
る。空中線1a〜1dは従来と同様の指向性を持ち、受
信機と併せての受信感度は図9で表される通りであると
する。いま、図9で到来方位は矢印の方向であり、受信
レベルはアンテナ31cでは32、アンテナ31dでは
33であったとする。まず、32−33の値から、つま
り振幅差から相対方位が求まる。振幅差(32−33)
と相対方位とは予めアンテナの指向特性から、例えば下
記の様に判っている。 振幅差(dB) 相対方位(度) −10 −30 −5 −15 0 0 +5 +15 +10 +30 次いで32の値と31cの本来持っている特性、つまり
31cの最大受信値と32の値の比から偏角αが求ま
る。この求め方自体は従来と変わらない。本実施例では
各空中線からの到来電波が異なる遅延時間だけ遅れてコ
ンパイナに到着する。従って、各指向性空中線の受信電
波を縦列に並べることができる。複数チャネルの受信電
波を縦列に並べれば、コンバイナで1本に併合し、後続
の受信機ないし信号処理器へは1つの処理系で構成でき
ることになる。単に時間的に従続して処理をすればよ
い。The operation of the azimuth detecting apparatus having the above structure will be described. It is assumed that the antennas 1a to 1d have the same directivity as the conventional one, and the receiving sensitivity together with the receiver is as shown in FIG. Now, in FIG. 9, it is assumed that the arrival direction is the direction of the arrow and the reception level is 32 for the antenna 31c and 33 for the antenna 31d. First, the relative azimuth is obtained from the value of 32-33, that is, the amplitude difference. Amplitude difference (32-33)
The relative azimuth and the relative azimuth are known in advance from the directional characteristics of the antenna as follows, for example. Amplitude difference (dB) Relative azimuth (degrees) −10 −30 −5 −15 0 0 +5 +15 +10 +30 Next, from the characteristic of 32 and the characteristic of 31c, that is, the ratio of the maximum received value of 31c and the value of 32. The declination α is obtained. This way of obtaining itself is the same as before. In this embodiment, the incoming radio waves from each antenna arrive at the compiner with a different delay time. Therefore, the received radio waves of each directional antenna can be arranged in a column. By arranging the received radio waves of a plurality of channels in tandem, they can be merged into one by a combiner, and the subsequent receiver or signal processor can be configured by one processing system. It suffices to simply follow the processing in time.
【0018】図2は本実施例での信号処理部9の方位探
知のステップを示す動作フローチャートの例である。即
ち、ステップS1で到来電波の諸元を定める。次いでス
テップS2で受信電波が時間軸上で重ならないように遅
延素子3a〜3dの遅延量をずらす。最後にステップS
3で、先に述べた従来と同様な検出と演算により到来方
位を求める。こうすることで従来例では、チャンネル間
のバラツキも含めて各受信機の感度が異なることの補正
が必要であったが、本実施例ではその補正が不要にな
り、時間短縮ができ、測定精度が上がる利点もある。な
お、遅延素子のうちの1つ、例えば、基準方位側の遅延
素子は不要であり、その場合、空中線出力は直接コンバ
イナに入力される。FIG. 2 is an example of an operation flowchart showing the steps of the direction detection of the signal processing unit 9 in this embodiment. That is, the specifications of the incoming radio wave are determined in step S1. Next, in step S2, the delay amounts of the delay elements 3a to 3d are shifted so that the received radio waves do not overlap on the time axis. Finally, step S
At 3, the arrival direction is obtained by the same detection and calculation as the above-mentioned conventional method. By doing so, in the conventional example, it was necessary to correct for the difference in sensitivity of each receiver including the variation between channels, but in the present embodiment, the correction is unnecessary, the time can be shortened, and the measurement accuracy can be improved. There is also an advantage that Note that one of the delay elements, for example, the delay element on the reference azimuth side is unnecessary, and in that case, the antenna output is directly input to the combiner.
【0019】実施例2.本実施例では遅延素子の構成を
簡単にし、選択切換とする。図3は本実施例の装置の構
成図であり、41a〜41dはタップ付遅延線、42a
〜42dはタップ切換器である。その他の素子は実施例
1と同様である。上記実施例では、各空中線で受信した
信号を遅延量固定の遅延線で意図的に到来時刻をずら
し、コンバイナで併合したが、本実施例では遅延線の遅
延量をタップ式の半固定にし、当該システムに最適な遅
延量を使った振幅比較による方位を探知する。各41
(41a,41b,41c,41d)の何番目の出力タ
ップを使用するかは、例えば信号処理部9が決め、タッ
プ切換器を設定する。遅延量決定後の方位探知は、実施
例1または従来と同様であるので詳細記述は省略する。Example 2. In this embodiment, the structure of the delay element is simplified and selection switching is performed. FIG. 3 is a block diagram of the apparatus of this embodiment, in which 41a to 41d are delay lines with taps, and 42a.
42d are tap changers. The other elements are the same as in Example 1. In the above embodiment, the signal received by each antenna is intentionally staggered in the arrival time with the delay amount fixed delay line and merged by the combiner, but in the present embodiment, the delay amount of the delay line is a semi-fixed tap type, The direction is detected by the amplitude comparison using the optimum delay amount for the system. 41 each
For example, the signal processing unit 9 determines which output tap of (41a, 41b, 41c, 41d) is used, and sets the tap changer. The direction detection after the delay amount is determined is the same as that in the first embodiment or the related art, and thus the detailed description will be omitted.
【0020】実施例3.更に他の簡易な構成の方位探知
装置を説明する。図4は本実施例の装置の構成図であ
る。図において、43a〜43dと43e〜43hで示
す2種類の遅延線グループを設けて、システムに適合す
る遅延線グループを選択使用する構成とする。単に2種
類の遅延量を選択するだけの構成であり、調整又は判定
範囲は狭まるが、より小規模な装置となる。Example 3. Still another direction detecting device having a simple structure will be described. FIG. 4 is a block diagram of the apparatus of this embodiment. In the figure, two types of delay line groups 43a to 43d and 43e to 43h are provided, and a delay line group suitable for the system is selected and used. This is a configuration in which only two types of delay amounts are selected, and the adjustment or determination range is narrowed, but the device is smaller.
【0021】実施例4.遅延量を外部の計算機で求め、
当該遅延量を設定するようにしてもよい。図5は本実施
例の装置の構成図である。図において、51a〜51d
は外部設定で可変になる遅延素子、52は外部計算機で
ある。遅延線の遅延量を当該信号のパルス幅に合った値
になる様計算機52で連続可変型遅延線51(51a〜
51d)の遅延量を最適に設定する。当該信号を検出
し、振幅比較で方位を求める動作は他の実施例と同様で
ある。Example 4. Calculate the delay amount with an external computer,
The delay amount may be set. FIG. 5 is a block diagram of the apparatus of this embodiment. In the figure, 51a to 51d
Is a delay element that is variable by external setting, and 52 is an external computer. The computer 52 sets the continuously variable delay line 51 (51a ...) so that the delay amount of the delay line becomes a value that matches the pulse width of the signal.
The delay amount of 51d) is optimally set. The operation of detecting the signal and finding the azimuth by comparing the amplitudes is the same as in the other embodiments.
【0022】実施例5.遅延素子として遅延線を用いた
例を示したが、表面弾性波素子を用いてもよい。図6は
本実施例の装置構成図であり、図において61a〜61
dは表面弾性波素子である。本素子を用いることで小型
で低価格の装置が得られる。Embodiment 5. Although the example in which the delay line is used as the delay element is shown, a surface acoustic wave element may be used. FIG. 6 is a device configuration diagram of the present embodiment. In FIG.
d is a surface acoustic wave element. By using this element, a small and low-cost device can be obtained.
【0023】実施例6.本実施例では、コンバイナに替
えて切換スイッチを用いた例を説明する。但し、事前に
各アンテナからの受信波が重ならないように遅延量を求
め、固定遅延としておく。図7は本実施例の装置の構成
図である。図において、55は切換スイッチで、1測定
時間中に順次4aないし4dの遅延した到来波を切替え
て受信機7に送る。以降の方位探知動作は実施例1と同
様である。なお、実施例1でも述べたが、いずれの実施
例においても、基準方位側に挿入した遅延素子3aは不
要である。Example 6. In this embodiment, an example in which a changeover switch is used instead of the combiner will be described. However, the delay amount is obtained in advance so that the received waves from the respective antennas do not overlap, and a fixed delay is set. FIG. 7 is a block diagram of the apparatus of this embodiment. In the figure, reference numeral 55 denotes a changeover switch, which sequentially switches the delayed arriving waves of 4a to 4d during one measurement time and sends them to the receiver 7. The subsequent direction detection operation is the same as that in the first embodiment. As described in the first embodiment, the delay element 3a inserted on the reference azimuth side is not necessary in any of the embodiments.
【0024】[0024]
【発明の効果】以上のようにこの発明によれば、異なる
方向に指向性を持つアンテナと異なる遅延時間の遅延素
子との組を複数と、混合器と方位検出用信号処理手段を
備えたので、簡単な構成で方位が検出できる効果があ
る。As described above, according to the present invention, a plurality of sets of antennas having directivity in different directions and delay elements having different delay times, a mixer and a signal processing means for direction detection are provided. The effect is that the direction can be detected with a simple configuration.
【0025】また更に、基本構成において各遅延素子の
遅延量を可変にしたので、到来受信電波が重ならないよ
うにして方位が検出できる効果がある。Furthermore, since the delay amount of each delay element is made variable in the basic configuration, there is an effect that the azimuth can be detected by preventing incoming received radio waves from overlapping.
【0026】また更に、各遅延素子の遅延量を外部制御
により可変にしたので、到来受信電波が重ならないよう
にして方位が検出できる効果がある。Furthermore, since the delay amount of each delay element is made variable by the external control, there is an effect that the azimuth can be detected by preventing the incoming radio waves from overlapping.
【0027】または、異なる方向に指向性を持つアンテ
ナと異なる遅延時間の遅延素子との組を複数と、切換ス
イッチと方位検出用信号処理手段を備えたので、簡単な
構成で方位が検出できる効果がある。Alternatively, since a plurality of sets of antennas having directivity in different directions and delay elements having different delay times, a changeover switch and a signal processing means for direction detection are provided, the direction can be detected with a simple structure. There is.
【0028】また更に、1つの受信増幅器で異なる各受
信電波を増幅してて信号処理手段に出力するようにした
ので、更に構成が簡単になる効果がある。Furthermore, since different reception radio waves are amplified by one reception amplifier and output to the signal processing means, there is an effect that the configuration is further simplified.
【図1】 この発明の実施例1の方位探知装置の構成図
である。FIG. 1 is a configuration diagram of a direction finding device according to a first embodiment of the present invention.
【図2】 この発明の実施例1、2の遅延量設定と方位
探知動作のフローチャート図である。FIG. 2 is a flow chart of delay amount setting and azimuth detection operation according to the first and second embodiments of the present invention.
【図3】 この発明の実施例2の方位探知装置の構成図
である。FIG. 3 is a configuration diagram of an azimuth detecting device according to a second embodiment of the present invention.
【図4】 この発明の実施例3の方位探知装置の構成図
である。FIG. 4 is a configuration diagram of an azimuth detecting apparatus according to a third embodiment of the present invention.
【図5】 この発明の実施例4の方位探知装置の構成図
である。FIG. 5 is a configuration diagram of an azimuth detecting device according to a fourth embodiment of the present invention.
【図6】 この発明の実施例5の方位探知装置の構成図
である。FIG. 6 is a configuration diagram of a direction finding device according to a fifth embodiment of the present invention.
【図7】 この発明の実施例6の方位探知装置の構成図
である。FIG. 7 is a configuration diagram of an azimuth detecting device according to a sixth embodiment of the present invention.
【図8】 従来の方位探知装置の構成図である。FIG. 8 is a block diagram of a conventional direction finding device.
【図9】 方位探知装置の動作を説明するための受信感
度図である。FIG. 9 is a reception sensitivity diagram for explaining the operation of the azimuth detecting device.
1,1a,1b,1c,1d 指向性空中線、2,2
a,2b,2c,2d給電線、3,3a,3b,3c,
3d 遅延線、4,4a,4b,4c,4d給電線、5
コンバイナ、7 受信機、9 信号処理器、31a
指向性空中線1aの受信電力パターン、31b 指向性
空中線1bの受信電力パターン、31c 指向性空中線
1cの受信電力パターン、31d 指向性空中線1dの
受信電力パターン、32 アンテナ1cで受信した受信
電力、33 アンテナ1dで受信した受信電力、41
a,41b,41c,41d タップ式遅延線、42
a,42b,42c,42d システムで遅延量を選択
決定するスイッチ、43a遅延量1aを持った遅延線、
43b 遅延量1bを持った遅延線、43c 遅延量1
cを持った遅延線、43d 遅延量1dを持った遅延
線、43e 遅延量2eを持った遅延線、43f 遅延
量2fを持った遅延線、43g 遅延量2gを持った遅
延線、43h 遅延量2hを持った遅延線、51a 可
変遅延量を持った遅延線a、51b 可変遅延量を持っ
た遅延線b、51c 可変遅延量を持った遅延線c、5
1d 可変遅延量を持った遅延線d、52 外部計算
機、55切替スイッチ、61a 表面弾性波を応用した
遅延線a、61b 表面弾性波を応用した遅延線b、6
1c 表面弾性波を応用した遅延線c、61d 表面弾
性波を応用した遅延線d。1, 1a, 1b, 1c, 1d Directive antenna, 2, 2
a, 2b, 2c, 2d feeder, 3, 3a, 3b, 3c,
3d delay line, 4, 4a, 4b, 4c, 4d feeder line, 5
Combiner, 7 receiver, 9 signal processor, 31a
Received power pattern of directional antenna 1a, 31b Received power pattern of directional antenna 1b, 31c Received power pattern of directional antenna 1c, 31d Received power pattern of directional antenna 1d, 32 Received power received by antenna 1c, 33 antenna Received power received in 1d, 41
a, 41b, 41c, 41d Tap type delay line, 42
a, 42b, 42c, 42d A switch for selectively determining the delay amount in the system, a delay line 43a having a delay amount 1a,
43b Delay line with delay amount 1b, 43c Delay amount 1
c delay line, 43d delay line 1d delay line, 43e delay line 2e delay line, 43f delay line 2f delay line, 43g delay line 2g delay line, 43h delay line Delay line with 2h, 51a Delay line a with variable delay amount, 51b Delay line b with variable delay amount, 51c Delay line c with variable delay amount, 5
1d Delay line d with variable delay amount, 52 External computer, 55 changeover switch, 61a Delay line a, 61b applying surface acoustic wave Delay line b, 6 applying surface acoustic wave
1c Delay line c applying surface acoustic wave, 61d Delay line d applying surface acoustic wave.
Claims (5)
上記アンテナ出力を対応した所定の時間だけ遅延させる
遅延素子を組とし、 それぞれ異なる方向と異なる遅延時間を設定した複数の
組と、上記各組の出力を混合する混合器と、上記混合器
出力の受信電波の振幅差から方位を検出する信号処理手
段を備えた方位探知装置。1. An antenna having directivity in a predetermined direction,
A set of delay elements for delaying the antenna output by a corresponding predetermined time is set, and a plurality of sets in which different directions and different delay times are set respectively, a mixer for mixing the outputs of each set, and a mixer output An azimuth detecting device comprising signal processing means for detecting an azimuth from an amplitude difference between received radio waves.
したことを特徴とする請求項1記載の方位探知装置。2. The direction finding device according to claim 1, wherein the delay amount of each delay element is variable.
御により可変にしたことを特徴とする請求項2記載の方
位探知装置。3. The direction finding device according to claim 2, wherein the delay amount of each delay element is variable by external control.
上記アンテナ出力を対応した所定の時間だけ遅延させる
遅延素子を組とし、 それぞれ異なる方向と異なる遅延時間を設定した複数の
組と、上記各組の出力を時間的に切り換える切換スイッ
チと、上記切換スイッチ出力の受信電波の振幅差から方
位を検出する信号処理手段を備えた方位探知装置。4. An antenna having directivity in a predetermined direction,
A set of delay elements for delaying the antenna output by a corresponding predetermined time, a plurality of sets having different directions and different delay times set, a changeover switch for changing over the output of each set with time, and the changeover switch An azimuth detection device comprising signal processing means for detecting an azimuth from an amplitude difference between output received radio waves.
して信号処理手段に出力する1つの受信機を設けたこと
を特徴とする請求項1記載の方位探知装置。5. The azimuth detecting apparatus according to claim 1, further comprising one receiver that detects and amplifies the amplitude of the received radio wave and outputs it to the signal processing means.
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JP15786995A JP3146129B2 (en) | 1995-06-23 | 1995-06-23 | Orientation detection device |
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JP15786995A JP3146129B2 (en) | 1995-06-23 | 1995-06-23 | Orientation detection device |
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JPH095416A true JPH095416A (en) | 1997-01-10 |
JP3146129B2 JP3146129B2 (en) | 2001-03-12 |
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JP15786995A Expired - Fee Related JP3146129B2 (en) | 1995-06-23 | 1995-06-23 | Orientation detection device |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014527165A (en) * | 2011-07-25 | 2014-10-09 | フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン | Concept to determine the orientation of a portable device |
WO2020256081A1 (en) * | 2019-06-21 | 2020-12-24 | 株式会社Where | Region determining system |
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KR102505541B1 (en) * | 2021-04-23 | 2023-03-03 | 윤대성 | Keratin removal device |
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1995
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014527165A (en) * | 2011-07-25 | 2014-10-09 | フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン | Concept to determine the orientation of a portable device |
US9529075B2 (en) | 2011-07-25 | 2016-12-27 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Concept for determining an orientation of a mobile device |
WO2020256081A1 (en) * | 2019-06-21 | 2020-12-24 | 株式会社Where | Region determining system |
JP2021001805A (en) * | 2019-06-21 | 2021-01-07 | 株式会社Where | Area determination system |
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