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(ÁÖ)½ºÇÉÅÚ·¹ÄÞÀº ȸ»ç°¡ º¸À¯Çϰí ÀÖ´Â µðÁöÅÐ ½Åȣó¸® ±â¼úÀ» Ȱ¿ëÇÏ¿© LADAR ½Ã½ºÅÛÀ» °³¹ßÇϰí ÀÖ½À´Ï´Ù.
ETRI¿Í ÇÔ²² Linear/Subgeiger-Mode¿ë LADAR ½Ã½ºÅÛ °³¹ßÀ» ¼º°øÇÏ¿´À¸¸ç, 2012³â¿¡´Â ¹Î±º°â¿ë±â¼ú°úÁ¦¸¦ ¼öÁÖÇÏ¿© LADAR ½Ã½ºÅÛ °³¹ß Âü¿©¸¦ ÅëÇØ Â÷±â ÁÖ·Â ¾ÆÀÌÅÛ È®º¸¸¦ À§ÇØ °æÁÖÇϰí ÀÖ½À´Ï´Ù.
LADAR(LAser Detection And Ranging)´Â ÆÄÀåÀÌ 600~1,000nmÀÎ ·¹ÀÌÁ®¸¦ ÀÌ¿ëÇØ ¿ø°Å¸® ¹°Ã¼¸¦ ½Äº°Çϱâ À§ÇÑ ±â¼úÀÔ´Ï´Ù.
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- ¹°Ã¼ ¹æÇâ¿¡ ÆòÇàÀÌ µÇµµ·Ï ÇÏ´Â ½ÃÁØ(collimation)À» À§ÇØ ·»Á Á¶Á¤
- ½ºÄ³³Ê ±¸µ¿ºÎ
- 1Â÷¿øÀÇ ·¹ÀÌÁ® ºöÀ» mirrorÀ» ÅëÇØ 2Â÷¿øÀ¸·Î ½ºÄ³´×Çϱâ À§ÇÑ ¸ðµâ
- mirrorÀÇ ±¸µ¿Àº Á¤¹ÐÇÑ °¥¹Ù³ë(Galvano) ¹æ½ÄÀÇ ¸ðÅÍ¿¡ ÀÇÇØ Á¦¾îµÇ¸ç ½ºÄµ °Å¸®¿Í ¿µ¿ª¿¡ µû¶ó ÃøÁ¤ Á¤¹Ðµµ°¡ ´Þ¶óÁü
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- ¼ö½ÅµÇ´Â ±¤ÀÚ¸¦ APD(Avalanche PhotoDiode) ¹× TIA(Trans-Impedance Amplifier) ¸®½Ã¹ö¸¦ ÅëÇØ ¼¾½ÌÇϸç, Ãâ·Â Àü¾ÐÀ» ¼ö mV±îÁö ÃøÁ¤Çϱâ À§ÇØ Á¤¹ÐÇÑ Àü¿ø ¼Ò½º°¡ ÇÊ¿äÇÔ
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- ADC(Analog/Digital Converter) ¹æ½Ä¿¡ ÀÇÇÑ ¼¾½ÌÀº °í¼ÓÀÇ ADC·Î ¼ö½Å·¹º§À» µðÁöÅÐÈÇÏ°í º°µµÀÇ peak °ËÃâ±â¸¦ ÅëÇØ ´Ù¼öÀÇ peak¸¦ °ËÃâÇÒ ¼ö ÀÖÀ½
- TDC(Time-to-Digital Converter) ¹æ½ÄÀÇ °æ¿ì °í¼ÓÀÇ ADC´Â ÇÊ¿äÇÏÁö ¾ÊÁö¸¸ ¼ö½Å½ÅÈ£ÀÇ Æ¯¼ºÀ» ÆÄ¾ÇÇϴµ¥ Á¦¾àÀÌ ÀÖÀ¸¸ç, °ËÃâµÈ Peaks¸¦ ½ºÄ³´× Á¤º¸·Î Æ÷ÀåÇÑ ÈÄ ¿µ»ó 󸮱â·Î Àü¼Û
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- ½Åȣ󸮱⿡¼ 1Â÷ °¡°øµÈ 3Â÷¿ø Á¤º¸¸¦ ¹ÙÅÁÀ¸·Î ½Ã°¢È(visualization) ÀÛ¾÷À» ¼öÇà
- º¸´Ù Á¤¹ÐÇÑ 3Â÷¿ø ¿µ»óÀ» ¾ò±â À§ÇØ ³ëÀÌÁ orange peel effect µîÀ» ºÎµå·´°Ô(smoothing)ÇÏ´Â º°µµÀÇ ÀÛ¾÷À» ¼öÇà
°³¹ßµÈ LADAR ½Ã½ºÅÛ È¤Àº ±¸¼º ¸ðµâ¿¡ ´ëÇÑ Æ¯Â¡ ¹× ÁÖ¿ä ±Ô°ÝÀº ´ÙÀ½°ú °°½À´Ï´Ù.
Module | Item | Spec. | Comments |
---|---|---|---|
Scanner Operator | Controllable dimension | 2 - dimension | X, Y |
Range | ¡¾ 5 V | ||
Resolution | 480 KHz | ||
Rotation | Fully rotation | 0<angle<360o | |
Noise | 4 mV rms | Front Placement | |
ADC | Dimension | 85 x 61 x 20 | Without cooler |
Resolution | 10 bits | ||
Sampling Rate | 1.5 Gsps | ||
Input | ¡¾ 500 mVpp | ||
Output | 1:2 or 1:4 Demultiplexed | ||
ADC Adapter | FPGA | Virtex-5 | 65 nm |
Processing Speed | 187 MHz | ||
Interface | USB | Possible to MATLAB control | |
APD Power | APD Bias | Min 0 V ~ Max 90 V | |
APD Bias resolution | 0.34 V | 8 bits | |
TIA Bias | +3.3 V | ||
TIA Bias Noise | < 1 mVrms | ||
PLL | Frequency | 1,500 MHz | |
Stability | 10 ppm | ||
Output Level | < 10 dBm | ||
UI Controller | LCD Control | VGA | |
LED Control | 32 EA 7-Segments | 8 x 4 | |
Key Pad | 4 x 4 Matrix | ||
Push button | 4 EA | ||
RS-232 | 2 EA | ||
Ethernet | 10/100 Base | ||
DSP | Speed | 1.2 GHz | |
Memory | DDR | 533MHz | |
TCP/IP | Giga-Bit Ethernet | Protocol Stack |