JP2007309784A - 合成開口レーダの画像処理装置及び方法 - Google Patents
合成開口レーダの画像処理装置及び方法 Download PDFInfo
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- JP2007309784A JP2007309784A JP2006139102A JP2006139102A JP2007309784A JP 2007309784 A JP2007309784 A JP 2007309784A JP 2006139102 A JP2006139102 A JP 2006139102A JP 2006139102 A JP2006139102 A JP 2006139102A JP 2007309784 A JP2007309784 A JP 2007309784A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000003672 processing method Methods 0.000 claims 3
- 238000001914 filtration Methods 0.000 claims 2
- 238000001514 detection method Methods 0.000 abstract description 9
- 230000007423 decrease Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000001629 suppression Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
Images
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
- G01S13/90—Radar or analogous systems specially adapted for specific applications for mapping or imaging using synthetic aperture techniques, e.g. synthetic aperture radar [SAR] techniques
- G01S13/9004—SAR image acquisition techniques
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/50—Image enhancement or restoration using two or more images, e.g. averaging or subtraction
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/04—Changes in size, position or resolution of an image
- G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
- G09G2340/0414—Vertical resolution change
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/04—Changes in size, position or resolution of an image
- G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
- G09G2340/0421—Horizontal resolution change
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
【解決手段】 高分解能処理部1で、小物標4に匹敵するか、若しくはさらに小さい領域まで高分解能処理を実施して、小物標がもつ情報を取得する。次に、最大値フィルタ処理部2で、前記高分解能処理で得られた小物標の情報を、低分解能処理上の1ピクセルに最大値で展開する。そして表示部3で、低分解能処理上の最小領域を1ピクセルとして画面表示する。以上のように、小物標が本来もつ情報を損なうことなく表示可能であるため、背景の情報との識別が容易となり、レーダとしての探知能力を向上させることができる。
【選択図】 図1
Description
2 最大値フィルタ処理部
3 表示部
4 小物標
5 海面クラッタ(背景の情報)
Claims (6)
- 小物標に匹敵するか、若しくはさらに小さい領域まで高分解能処理を実施して、小物標がもつ情報を取得する高分解能処理部と、
前記高分解能処理で得られた小物標の情報を、低分解能処理上の1ピクセルに最大値で展開する最大値フィルタ処理部と、
低分解能処理上の最小領域を1ピクセルとして画面表示する表示部とを有することを特徴とする合成開口レーダの画像処理装置。 - 前記高分解能処理部は、アジマス圧縮処理を行い、アジマス方向を高分解能化する機能を有することを特徴とする請求項1に記載の合成開口レーダの画像処理装置。
- 前記最大値フィルタ処理部は、小物標が存在しない領域に背景の情報の最大値を適用する機能を有することを特徴とする請求項1に記載の合成開口レーダの画像処理装置。
- 小物標に匹敵するか、若しくはさらに小さい領域まで高分解能処理を実施して、小物標がもつ情報を取得する高分解能処理と、
前記高分解能処理で得られた小物標の情報を、低分解能処理上の1ピクセルに最大値で展開する最大値フィルタ処理と、
低分解能処理上の最小領域を1ピクセルとして画面表示する表示処理とを実行することを特徴とする合成開口レーダの画像処理方法。 - 前記高分解能処理において、アジマス圧縮処理を行い、アジマス方向を高分解能化することを特徴とする請求項4に記載の合成開口レーダの画像処理方法。
- 前記最大値フィルタ処理において、小物標が存在しない領域に背景の情報の最大値を適用することを特徴とする請求項4に記載の合成開口レーダの画像処理方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006139102A JP5011817B2 (ja) | 2006-05-18 | 2006-05-18 | 合成開口レーダの画像処理装置及び方法 |
US11/785,662 US8179301B2 (en) | 2006-05-18 | 2007-04-19 | Image processor and image processing method for synthetic aperture radar |
Applications Claiming Priority (1)
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JP2006139102A JP5011817B2 (ja) | 2006-05-18 | 2006-05-18 | 合成開口レーダの画像処理装置及び方法 |
Publications (2)
Publication Number | Publication Date |
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JP2007309784A true JP2007309784A (ja) | 2007-11-29 |
JP5011817B2 JP5011817B2 (ja) | 2012-08-29 |
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JP2006139102A Active JP5011817B2 (ja) | 2006-05-18 | 2006-05-18 | 合成開口レーダの画像処理装置及び方法 |
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US (1) | US8179301B2 (ja) |
JP (1) | JP5011817B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108594190A (zh) * | 2018-04-20 | 2018-09-28 | 西安电子科技大学 | 一种高分辨海杂波的仿真方法 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102144173B (zh) * | 2008-05-29 | 2014-08-20 | 电视广播有限公司 | 合成孔径雷达成像的海域中的目标检测 |
CN102183762B (zh) * | 2011-03-15 | 2012-09-05 | 北京航空航天大学 | 一种压缩感知合成孔径雷达数据获取与成像方法 |
CN102914768B (zh) * | 2012-09-25 | 2014-09-17 | 中国人民解放军海军航空工程学院 | 基于形态成分分析的海面微动目标检测和特征提取方法 |
WO2016097890A1 (en) * | 2014-12-15 | 2016-06-23 | Airbus Group Singapore Pte. Ltd. | Automated method for selecting training areas of sea clutter and detecting ship targets in polarimetric synthetic aperture radar imagery |
JP6526532B2 (ja) * | 2015-09-18 | 2019-06-05 | 古野電気株式会社 | レーダ装置 |
CN112379373B (zh) * | 2020-09-29 | 2023-09-01 | 北京空间飞行器总体设计部 | 一种星载sar实时成像装置 |
Citations (6)
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JPH01213590A (ja) * | 1988-02-22 | 1989-08-28 | Nec Corp | アクティブソーナー装置 |
JPH02205790A (ja) * | 1989-02-03 | 1990-08-15 | Nec Corp | ソーナー信号表示装置 |
JPH04248488A (ja) * | 1991-02-04 | 1992-09-03 | Nec Corp | 映像信号処理回路 |
JPH0561963A (ja) * | 1991-09-04 | 1993-03-12 | Mitsubishi Electric Corp | 地球観測方法 |
JPH11281739A (ja) * | 1998-03-27 | 1999-10-15 | Mitsubishi Electric Corp | レーダ信号処理装置 |
JP2001194455A (ja) * | 2000-01-14 | 2001-07-19 | Mitsubishi Electric Corp | レーダ信号処理装置 |
Family Cites Families (14)
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US4707697A (en) * | 1986-05-02 | 1987-11-17 | Honeywell Inc. | High resolution noncoherent radar imager |
US5021789A (en) * | 1990-07-02 | 1991-06-04 | The United States Of America As Represented By The Secretary Of The Air Force | Real-time high resolution autofocus system in digital radar signal processors |
US5448241A (en) * | 1994-05-26 | 1995-09-05 | Hughes Aircraft Company | Terrain height radar |
JP3355076B2 (ja) | 1995-09-14 | 2002-12-09 | 三菱電機株式会社 | 顔画像処理装置 |
US5666121A (en) * | 1995-09-19 | 1997-09-09 | California Institute Of Technology | VLSI processor design of real-time data compression for high resolution imaging radar |
CA2251125A1 (en) * | 1996-04-16 | 1997-11-06 | William M. Sunlin | Material penetrating imaging radar |
US5708436A (en) * | 1996-06-24 | 1998-01-13 | Northrop Grumman Corporation | Multi-mode radar system having real-time ultra high resolution synthetic aperture radar (SAR) capability |
US6018306A (en) * | 1998-08-21 | 2000-01-25 | Raytheon Company | Scalable range migration algorithm for high-resolution, large-area SAR imaging |
JP2000249527A (ja) | 1999-03-03 | 2000-09-14 | Sekisui Chem Co Ltd | 表面欠陥検出装置及び表面欠陥検出方法 |
US6255981B1 (en) * | 1999-08-04 | 2001-07-03 | Raytheon Company | Method for range alignment and rotation correction of a high resolution image in an inverse synthetic aperture radar system |
US6608585B2 (en) * | 2001-03-02 | 2003-08-19 | Massachusetts Institute Of Technology | High-definition imaging apparatus and method |
US6965341B1 (en) * | 2003-12-15 | 2005-11-15 | The United States Of America As Represented By The Secretary Of The Air Force | High resolution SAR processing using stepped-frequency chirp waveform |
US7106243B2 (en) * | 2004-11-23 | 2006-09-12 | Raytheon Company | Technique for enhanced quality high resolution 2D imaging of ground moving targets |
US7701383B2 (en) * | 2005-04-04 | 2010-04-20 | Telephonics, Inc. | Method for detecting a target |
-
2006
- 2006-05-18 JP JP2006139102A patent/JP5011817B2/ja active Active
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2007
- 2007-04-19 US US11/785,662 patent/US8179301B2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01213590A (ja) * | 1988-02-22 | 1989-08-28 | Nec Corp | アクティブソーナー装置 |
JPH02205790A (ja) * | 1989-02-03 | 1990-08-15 | Nec Corp | ソーナー信号表示装置 |
JPH04248488A (ja) * | 1991-02-04 | 1992-09-03 | Nec Corp | 映像信号処理回路 |
JPH0561963A (ja) * | 1991-09-04 | 1993-03-12 | Mitsubishi Electric Corp | 地球観測方法 |
JPH11281739A (ja) * | 1998-03-27 | 1999-10-15 | Mitsubishi Electric Corp | レーダ信号処理装置 |
JP2001194455A (ja) * | 2000-01-14 | 2001-07-19 | Mitsubishi Electric Corp | レーダ信号処理装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108594190A (zh) * | 2018-04-20 | 2018-09-28 | 西安电子科技大学 | 一种高分辨海杂波的仿真方法 |
CN108594190B (zh) * | 2018-04-20 | 2021-04-27 | 西安电子科技大学 | 一种高分辨海杂波的仿真方法 |
Also Published As
Publication number | Publication date |
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US8179301B2 (en) | 2012-05-15 |
JP5011817B2 (ja) | 2012-08-29 |
US20070268305A1 (en) | 2007-11-22 |
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