JPS5920174U - Loran C receiver for vehicles - Google Patents
Loran C receiver for vehiclesInfo
- Publication number
- JPS5920174U JPS5920174U JP11333982U JP11333982U JPS5920174U JP S5920174 U JPS5920174 U JP S5920174U JP 11333982 U JP11333982 U JP 11333982U JP 11333982 U JP11333982 U JP 11333982U JP S5920174 U JPS5920174 U JP S5920174U
- Authority
- JP
- Japan
- Prior art keywords
- loran
- time difference
- receiver
- arrival time
- vehicle
- 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.)
- Pending
Links
Landscapes
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はラジオ受信機等で用いられている従来の雑音除
去回路を示したブロック図、第２図は本考案の一実施例
を示したブロック図、第３図は第２図の実施例における
各部の信号波形を示したタイムチャート図、第４図はロ
ランＣ受信信号のパルス波形を詳細に示した波形説明図
である。
１０・・・受信アンテナ、１１・・・前置増幅器、１２
゜１６・・・バンドパスフィルタ、１３．１７・・・ア
ンプ、１４・・・同軸ケーブル、１５・・・ロランＣ受
信機、１８・・・ノツチフィルタ、１９・・・雑音除去
回路部、２０・・・ゲートスイッチ、２１・・・エンベ
ロープ検出回路、２２・・・サイクル検出回路、２３・
・・信号処理回路、２４・・・サンプリングパルス発生
器、２５・・・サンプリング回路、２６・・・ゲート制
御回路。Fig. 1 is a block diagram showing a conventional noise removal circuit used in radio receivers, etc., Fig. 2 is a block diagram showing an embodiment of the present invention, and Fig. 3 is an embodiment of Fig. 2. FIG. 4 is a time chart diagram showing the signal waveforms of various parts in FIG. 10... Receiving antenna, 11... Preamplifier, 12
゜16... Bandpass filter, 13.17... Amplifier, 14... Coaxial cable, 15... Loran C receiver, 18... Notch filter, 19... Noise removal circuit section, 20 ... Gate switch, 21 ... Envelope detection circuit, 22 ... Cycle detection circuit, 23.
...Signal processing circuit, 24...Sampling pulse generator, 25...Sampling circuit, 26...Gate control circuit.
Claims (1)
されたロランＣ電波との到達時間差を測定し、該測定時
間差に基づいて車両の現在位置を演算する車両用ロラン
Ｃ受信機に於いて、上記ロランＣ電波の受信パルスの立
上り以前ひ所定時間内の受信信号レベルを検出する検出
手段と、 該検出手段の検出レベルがパルス性雑音の混入により所
定レベルを上回ったとき、上記受信パルスの入力もしく
は上記到達時間差の測定を一時停止する停止手段とを有
することを特徴とする車両用ロランＣ受信機。[Claims for Utility Model Registration] A vehicle that measures the arrival time difference between Loran C radio waves emitted from a main station and Loran C radio waves emitted from multiple slave stations, and calculates the current position of the vehicle based on the measured time difference. The Loran C receiver for use includes a detection means for detecting the received signal level within a predetermined time before the rise of the received pulse of the Loran C radio wave, and a detection level of the detection means that exceeds the predetermined level due to the mixing of pulse noise. 1. A Loran C receiver for a vehicle, comprising a stop means for temporarily stopping the input of the received pulse or the measurement of the arrival time difference when the arrival time difference is exceeded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11333982U JPS5920174U (en) | 1982-07-28 | 1982-07-28 | Loran C receiver for vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11333982U JPS5920174U (en) | 1982-07-28 | 1982-07-28 | Loran C receiver for vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5920174U true JPS5920174U (en) | 1984-02-07 |
Family
ID=30262402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11333982U Pending JPS5920174U (en) | 1982-07-28 | 1982-07-28 | Loran C receiver for vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5920174U (en) |
-
1982
- 1982-07-28 JP JP11333982U patent/JPS5920174U/en active Pending
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