JP4403574B2 - レーザレーダを用いた車両用の測距方法及び測距システム - Google Patents
レーザレーダを用いた車両用の測距方法及び測距システム Download PDFInfo
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- JP4403574B2 JP4403574B2 JP2003287907A JP2003287907A JP4403574B2 JP 4403574 B2 JP4403574 B2 JP 4403574B2 JP 2003287907 A JP2003287907 A JP 2003287907A JP 2003287907 A JP2003287907 A JP 2003287907A JP 4403574 B2 JP4403574 B2 JP 4403574B2
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Description
SAW 弾性表面波
Chirp チャープ
LD レーザダイオード
PD ホトダイオード
PS パルス
LNA ローノイズアンプ
Claims (3)
- 車間距離の保持、衝突回避又は運転者保護の指示を与えるようにOOC系列を用いタイムホッピングさせてパルス波を発生させ、このパルス波をSAW−DDLからなるチャープ拡散手段によりチャープ変調し、時間拡散させた信号を低パワーレーザダイオードに加えてレーザ光を発生させ、この発生させたレーザ光を標的に送信し、この送信に対し標的から反射して来た受信光信号を光電変換し、この光電変換により得た電気信号を、受信部のSAW−DDLにより、チャープ信号をパルス信号に戻す処理し、このパルス信号をタイマーに取り込んでOOC系列との同期チェックを行い、前記レーザ光の送信信号と前記同期処理した受信信号との時間差を求め、この時間差により、発信位置と標的位置との距離を測定することを特徴としたレーザレーダを用いた車両用の測距方法。
- チャープ信号にPN系列を乗算させることを特徴とした請求項1記載のレーザレーダを用いた車両用の測距方法。
- 車間距離の保持、衝突回避又は運転者保護の指示を与えるように、OOC系列を用いたタイムホッピングさせてパルス波を発生させるパルス波発生手段と、前記パルス波をチャープ変調するSAW−DDLからなるチャープ拡散手段と、時間拡散させた信号を低パワーレーザダイオードに加えて発生させたレーザ光を送信させる送信手段と、標的から反射してきた光信号の受信手段と、受信した光信号をチャープ逆拡散してタイマーに取り込むタイマー取り込み手段と、タイマーの入力と送信されたOOC系列との同期チェックをする同期処理手段と、前記送信手段による送信と、その受信との時間差を用いた前記発信位置と標的との距離計算手段とを順次組み合わせたことを特徴とするレーザレーダを用いた車両用の測距システム。
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JP2003287907A JP4403574B2 (ja) | 2003-08-06 | 2003-08-06 | レーザレーダを用いた車両用の測距方法及び測距システム |
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JP2003287907A JP4403574B2 (ja) | 2003-08-06 | 2003-08-06 | レーザレーダを用いた車両用の測距方法及び測距システム |
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JP2005055356A JP2005055356A (ja) | 2005-03-03 |
JP4403574B2 true JP4403574B2 (ja) | 2010-01-27 |
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JP2003287907A Expired - Fee Related JP4403574B2 (ja) | 2003-08-06 | 2003-08-06 | レーザレーダを用いた車両用の測距方法及び測距システム |
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Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4670404B2 (ja) * | 2005-03-08 | 2011-04-13 | スズキ株式会社 | 信号の混信確認方法及びレーダ装置 |
JP2007003291A (ja) * | 2005-06-22 | 2007-01-11 | Toyota Motor Corp | チャープレーダ装置 |
KR101144527B1 (ko) | 2010-04-05 | 2012-05-11 | 성균관대학교산학협력단 | 오버랩 기반 css 시스템을 이용한 근거리 측정 방법 및 장치 |
JP6083935B2 (ja) * | 2012-02-22 | 2017-02-22 | 日本無線株式会社 | 目標輪郭識別装置 |
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