JP2964709B2 - Pulse receiver - Google Patents
Pulse receiverInfo
- Publication number
- JP2964709B2 JP2964709B2 JP3161193A JP16119391A JP2964709B2 JP 2964709 B2 JP2964709 B2 JP 2964709B2 JP 3161193 A JP3161193 A JP 3161193A JP 16119391 A JP16119391 A JP 16119391A JP 2964709 B2 JP2964709 B2 JP 2964709B2
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- pulse signal
- pulse
- circuit
- output
- 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.)
- Expired - Lifetime
Links
Landscapes
- Radar Systems Or Details Thereof (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はパルス受信装置に関し、
特に一定周期で発射される電波発射源からのパルス信号
を受信して周波数および到来方位等を計測するパルス受
信装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulse receiving device,
More particularly, the present invention relates to a pulse receiving apparatus that receives a pulse signal from a radio wave emitting source that is emitted at a constant cycle and measures a frequency, an arrival direction, and the like.
【０００２】[0002]
【従来の技術】従来、この種のパルス受信装置は、図２
に示すように、電波発射源からのパルス信号を空中線１
により受信して周波数を計測する周波数計測回路２と、
パルス信号を方位空中線３により受信して到来方位を算
出する方位計測回路４と、周波数および方位計測データ
をラッチして出力する出力回路８とを有している。2. Description of the Related Art Conventionally, this kind of pulse receiving apparatus has been disclosed in FIG.
As shown in the figure, the pulse signal from the radio wave
A frequency measuring circuit 2 for receiving and measuring the frequency by
The azimuth measurement circuit 4 receives a pulse signal from the azimuth antenna 3 and calculates an azimuth of arrival. The output circuit 8 latches and outputs frequency and azimuth measurement data.
【０００３】[0003]
【発明が解決しようとする課題】上述した従来のパルス
受信装置では、周辺に建造物や山等が存在する場合、電
波発射源から直接到来するパルス信号のほかに、周辺の
建造物や山等からの反射波も受信する。このため、目標
とする発射源からのパルス信号を正確に計測できないと
いう問題点を有している。In the above-described conventional pulse receiving apparatus, when a building, a mountain, or the like is present in the vicinity, in addition to the pulse signal directly coming from the radio wave emission source, the surrounding building, the mountain, or the like is used. And also receives the reflected wave from. For this reason, there is a problem that a pulse signal from a target emission source cannot be accurately measured.
【０００４】本発明の目的は、周囲の建造物や山等から
の反射波の計測データを除去し、電波発射源から直接到
来するパルス信号を正確に計測できるパルス受信装置を
提供することにある。An object of the present invention is to provide a pulse receiving apparatus capable of removing measurement data of reflected waves from surrounding buildings and mountains, and accurately measuring a pulse signal directly coming from a radio wave emitting source. .
【０００５】[0005]
【課題を解決するための手段】本発明のパルス受信装置
は、電波発射源から一定周期で発射されるパルス信号を
受信して周波数および到来方位等の計測データを出力す
るパルス受信装置において、前記パルス信号の周波数を
計測して周波数データを出力する周波数計測回路と、前
記周波数データを前記パルス信号受信後所定時間記憶す
る記憶回路と、前記所定時間内に受信した前記パルス信
号の周波数データと前記記憶回路に記憶された周波数デ
ータとを比較し一致した場合に出力禁止信号を送出する
比較回路と、前記パルス信号の前記計測データをラッチ
し前記出力禁止信号を受けたときに出力を停止する出力
回路とを備えて構成される。また、前記所定時間は、前
記電波発射源から発射されたパルス信号が周辺の建造物
や山等から反射して到来する期間に応じて設定する。According to the present invention, there is provided a pulse receiving apparatus for receiving a pulse signal emitted from a radio wave emitting source at a constant period and outputting measurement data such as a frequency and a direction of arrival. A frequency measurement circuit that measures the frequency of the pulse signal and outputs frequency data, a storage circuit that stores the frequency data for a predetermined time after the reception of the pulse signal, and a frequency data of the pulse signal received within the predetermined time. A comparison circuit that compares the frequency data stored in the storage circuit and sends an output prohibition signal when they match, and an output that latches the measurement data of the pulse signal and stops output when receiving the output prohibition signal And a circuit. In addition, the predetermined time is set according to a period during which a pulse signal emitted from the radio wave emission source is reflected from a nearby building, a mountain, or the like and arrives.
【０００６】[0006]
【実施例】次に本発明について図面を参照して説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.
【０００７】図１は本発明の一実施例を示すブロック図
であり、パルス信号を受信する空中線１，３と、受信し
たパルス信号の周波数を計測して周波数データを送出す
る周波数計測回路２と、受信したパルス信号の到来方位
を算出して方位データを送出する方位計測回路４と、周
波数データを所定時間記憶する記憶回路５と、周波数デ
ータを比較して出力禁止信号Ｃを送出する比較回路６
と、周波数データおよび方位データをラッチし、出力禁
止信号Ｃに応じてデータの送出を停止する出力回路７と
を備えている。FIG. 1 is a block diagram showing an embodiment of the present invention. Antennas 1 and 3 for receiving a pulse signal, a frequency measurement circuit 2 for measuring the frequency of the received pulse signal and transmitting frequency data, and A direction measuring circuit 4 for calculating the direction of arrival of the received pulse signal and transmitting the direction data; a storage circuit 5 for storing the frequency data for a predetermined time; and a comparing circuit for comparing the frequency data and transmitting the output prohibition signal C. 6
And an output circuit 7 for latching frequency data and azimuth data and stopping data transmission according to the output inhibition signal C.
【０００８】ところで、周辺の建造物や山等からの反射
波は、電波発射源から一定周期で直接到来するパルス信
号と同一周波数であるが、少し遅れて到来する。従っ
て、パルス信号を受信した後、所定時間内に到来する同
一周波数の信号の計測結果を無視することにより、反射
波の影響を除去できる。By the way, the reflected waves from the surrounding buildings, mountains and the like have the same frequency as the pulse signal directly arriving at a constant period from the radio wave emitting source, but arrive slightly later. Therefore, the influence of the reflected wave can be removed by ignoring the measurement result of the signal of the same frequency arriving within a predetermined time after receiving the pulse signal.
【０００９】次に動作を説明する。Next, the operation will be described.
【００１０】最初に、周波数計測回路２からの周波数デ
ータＤｆを記憶回路５に記憶させる。その後、比較回路
６は、周波数計測回路２から周波数データＤｆを受けた
ときに、記憶回路５に記憶させておいた周波数データを
読出して比較する。比較した結果、一致した場合は出力
禁止信号Ｃを送出する。また、一致しなかった場合は、
記憶回路５に記憶させてあった周波数データを、周波数
計測回路２からの周波数データＤｆで更新する。記憶回
路５は、所定時間だけ周波数データを記憶し、所定時間
が経過すると消去する。この所定時間は、周辺の建造物
や山等から反射波が到来する期間に応じて設定される。First, the frequency data Df from the frequency measurement circuit 2 is stored in the storage circuit 5. Thereafter, when receiving the frequency data Df from the frequency measurement circuit 2, the comparison circuit 6 reads out and compares the frequency data stored in the storage circuit 5. As a result of comparison, if they match, an output prohibition signal C is transmitted. If they don't match,
The frequency data stored in the storage circuit 5 is updated with the frequency data Df from the frequency measurement circuit 2. The storage circuit 5 stores the frequency data for a predetermined time, and erases the data after the predetermined time has elapsed. The predetermined time is set according to a period during which a reflected wave arrives from a nearby building, mountain, or the like.
【００１１】出力回路７は、比較回路６から出力禁止信
号Ｃを受けたとき、ラッチしている周波数データおよび
方位データの送出を停止する。When receiving the output prohibition signal C from the comparison circuit 6, the output circuit 7 stops sending the latched frequency data and azimuth data.
【００１２】このように処理することにより、電波発射
源から直接到来するパルス信号よりも、少し遅れて到来
する反射波の周波数データおよび方位データを出力させ
ないようにすることができる。By performing such processing, it is possible to prevent the frequency data and the direction data of the reflected wave arriving slightly later than the pulse signal arriving directly from the radio wave emitting source from being output.
【００１３】[0013]
【発明の効果】以上説明したように本発明は、電波発射
源から直接到来するパルス信号の周波数データをパルス
信号受信後所定時間だけ記憶させ、その後所定時間内に
受信したパルス信号の周波数データと記憶している周波
数データとを比較し、合致した場合は、受信したパルス
信号の計測データの出力を禁止するようにし、この所定
時間を、電波発射源から発射されたパルス信号が周辺の
建造物や山等から反射して到来する期間に応じて設定す
ることにより、周辺の建造物や山等からの反射波の計測
データを除去でき、電波発射源から直接到来するパルス
信号を正確に計測できる。As described above, according to the present invention, the frequency data of the pulse signal directly arriving from the radio wave emitting source is stored for a predetermined time after receiving the pulse signal, and the frequency data of the pulse signal received within the predetermined time is stored. The measured frequency data is compared with the stored frequency data, and if they match, the output of the measurement data of the received pulse signal is prohibited, and the pulse signal emitted from the radio wave emission source is By setting according to the period of reflection and arrival from mountains, etc., measurement data of reflected waves from surrounding buildings and mountains can be removed, and pulse signals directly arriving from the radio wave emission source can be accurately measured .
【図１】本発明の一実施例を示すブロック図である。FIG. 1 is a block diagram showing one embodiment of the present invention.
【図２】従来のパルス受信装置の一例を示すブロック図
である。FIG. 2 is a block diagram illustrating an example of a conventional pulse receiving device.
２ 周波数計測回路 ４ 方位計測回路 ５ 記憶回路 ６ 比較回路 ７ 出力回路 Ｄｆ 周波数データ Ｃ 出力禁止信号 2 Frequency measurement circuit 4 Azimuth measurement circuit 5 Storage circuit 6 Comparison circuit 7 Output circuit Df Frequency data C Output inhibit signal
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) G01S 3/00 - 3/74 G01S 7/00 - 7/42 G01S 13/00 - 13/95 ──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. 6 , DB name) G01S 3/00-3/74 G01S 7/00-7/42 G01S 13/00-13/95
Claims (2)
ルス信号を受信して周波数および到来方位等の計測デー
タを出力するパルス受信装置において、前記パルス信号
の周波数を計測して周波数データを出力する周波数計測
回路と、前記周波数データを前記パルス信号受信後所定
時間記憶する記憶回路と、前記所定時間内に受信した前
記パルス信号の周波数データと前記記憶回路に記憶され
た周波数データとを比較し一致した場合に出力禁止信号
を送出する比較回路と、前記パルス信号の前記計測デー
タをラッチし前記出力禁止信号を受けたときに出力を停
止する出力回路とを備えることを特徴とするパルス受信
装置。1. A pulse receiving apparatus which receives a pulse signal emitted from a radio wave emitting source at a constant period and outputs measurement data such as a frequency and a direction of arrival, and measures the frequency of the pulse signal to output frequency data. A frequency measurement circuit, a storage circuit that stores the frequency data for a predetermined time after receiving the pulse signal, and compares the frequency data of the pulse signal received within the predetermined time with the frequency data stored in the storage circuit. A pulse receiving apparatus comprising: a comparison circuit that sends an output prohibition signal when they match each other; and an output circuit that latches the measurement data of the pulse signal and stops output when receiving the output prohibition signal. .
射されたパルス信号が周辺の建造物や山等から反射して
到来する期間に応じて設定されることを特徴とする請求
項１記載のパルス受信装置。2. The apparatus according to claim 1, wherein the predetermined time is set according to a period during which a pulse signal emitted from the radio wave emission source is reflected from a nearby building, a mountain, or the like. Pulse receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3161193A JP2964709B2 (en) | 1991-07-02 | 1991-07-02 | Pulse receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3161193A JP2964709B2 (en) | 1991-07-02 | 1991-07-02 | Pulse receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05223913A JPH05223913A (en) | 1993-09-03 |
| JP2964709B2 true JP2964709B2 (en) | 1999-10-18 |
Family
ID=15730355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3161193A Expired - Lifetime JP2964709B2 (en) | 1991-07-02 | 1991-07-02 | Pulse receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2964709B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6623997B2 (en) * | 2016-09-27 | 2019-12-25 | 株式会社デンソー | Direction notification system, direction notification method |
-
1991
- 1991-07-02 JP JP3161193A patent/JP2964709B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05223913A (en) | 1993-09-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19990713 |