FR2849928A1 - Helicopter recognizing process, involves effecting time-frequency analysis by transformation of back scattered radar signal to wavelet to detect reflection of main rotor blades in time-frequency space - Google Patents
Helicopter recognizing process, involves effecting time-frequency analysis by transformation of back scattered radar signal to wavelet to detect reflection of main rotor blades in time-frequency space Download PDFInfo
- Publication number
- FR2849928A1 FR2849928A1 FR9206837A FR9206837A FR2849928A1 FR 2849928 A1 FR2849928 A1 FR 2849928A1 FR 9206837 A FR9206837 A FR 9206837A FR 9206837 A FR9206837 A FR 9206837A FR 2849928 A1 FR2849928 A1 FR 2849928A1
- Authority
- FR
- France
- Prior art keywords
- frequency
- time
- signal
- flash
- analysis
- 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.)
- Withdrawn
Links
- 238000004458 analytical method Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000009466 transformation Effects 0.000 title abstract description 5
- 230000008569 process Effects 0.000 title abstract description 3
- 230000007774 longterm Effects 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims description 17
- 230000002123 temporal effect Effects 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 11
- 230000005484 gravity Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 3
- 230000004807 localization Effects 0.000 description 8
- 238000002592 echocardiography Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 230000001052 transient effect Effects 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000013139 quantization Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001364 causal effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012731 temporal analysis Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Classifications
-
- 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
- G01S7/415—Identification of targets based on measurements of movement associated with the target
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9206837A FR2849928A1 (en) | 1992-06-05 | 1992-06-05 | Helicopter recognizing process, involves effecting time-frequency analysis by transformation of back scattered radar signal to wavelet to detect reflection of main rotor blades in time-frequency space |
| IT000399A ITTO930399A1 (it) | 1992-06-05 | 1993-06-04 | Procedimento per il riconoscimento di un elicottero mediante analisi ad ondine del segnale radar retrodiffuso dalle pale del rotore principale. |
| GBGB9311520.2A GB9311520D0 (en) | 1992-06-05 | 1993-06-04 | Method of recognition of helicopters through wavelet analysis of the radar signal backscattered by the blades of the main rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9206837A FR2849928A1 (en) | 1992-06-05 | 1992-06-05 | Helicopter recognizing process, involves effecting time-frequency analysis by transformation of back scattered radar signal to wavelet to detect reflection of main rotor blades in time-frequency space |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2849928A1 true FR2849928A1 (en) | 2004-07-16 |
Family
ID=32242063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9206837A Withdrawn FR2849928A1 (en) | 1992-06-05 | 1992-06-05 | Helicopter recognizing process, involves effecting time-frequency analysis by transformation of back scattered radar signal to wavelet to detect reflection of main rotor blades in time-frequency space |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR2849928A1 (enrdf_load_stackoverflow) |
| GB (1) | GB9311520D0 (enrdf_load_stackoverflow) |
| IT (1) | ITTO930399A1 (enrdf_load_stackoverflow) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540163A (zh) * | 2011-12-12 | 2012-07-04 | 中国船舶重工集团公司第七二四研究所 | 一种基于常规相参雷达的直升机分类识别方法 |
| CN110133600A (zh) * | 2019-06-17 | 2019-08-16 | 电子科技大学 | 一种直升机旋翼物理参数提取方法 |
-
1992
- 1992-06-05 FR FR9206837A patent/FR2849928A1/fr not_active Withdrawn
-
1993
- 1993-06-04 IT IT000399A patent/ITTO930399A1/it unknown
- 1993-06-04 GB GBGB9311520.2A patent/GB9311520D0/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540163A (zh) * | 2011-12-12 | 2012-07-04 | 中国船舶重工集团公司第七二四研究所 | 一种基于常规相参雷达的直升机分类识别方法 |
| CN110133600A (zh) * | 2019-06-17 | 2019-08-16 | 电子科技大学 | 一种直升机旋翼物理参数提取方法 |
| CN110133600B (zh) * | 2019-06-17 | 2022-11-04 | 电子科技大学 | 一种直升机旋翼物理参数提取方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| ITTO930399A1 (it) | 1994-12-04 |
| ITTO930399A0 (enrdf_load_stackoverflow) | 1993-06-04 |
| GB9311520D0 (en) | 2004-05-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |
Effective date: 20110531 |