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Using digital signal handling technology owned by us, Spin Telecom Ltd, is developing LADAR system.
Recently, after successfully developing LIDAR system for ETRI and Linear/Subgeiger-bode, we could receive civil-military technology project order in 2012.
LADAR is one kind of Lidar system which descries long-distance figure using 600~100mm wavelength Laser. Generally, they are used for military unmanned car and robot, but nowadays they are installed in some cars and help improve drivers convenience when parking.
Unmanned driving system is one of the core assignments for future cars and for this, Lidar system will be focused on for core function for car industry.
- Laser Transmitter
- It transmits high-intensity laser beam, which control the beam power or duty and adjust the lense for collimation.
- Scanner Operator
- Dimensional laser beam into 2 dimension utilizing mirror.
- Operation of mirror is controlled by the meticulous galvano method motor, and measurement accuracy varies according to its scan distance and area.
- Laser Receiver
- It senses received light quantum through APD and TIA, and requires sensitive power resource in order to measure the output voltage to mV.
- Signal Processor
- Sensing adopting ADC method enables digitalization of received level through high-speed ADC and detection of innumerable peaks through a separate peak detector.
- TDC method does not require high-speed ADC, but has limits in catching the traits of received signals. It covers detected peaks with scanned information and transmits through image processor.
- 3-Dimensional Image Processor
- It performs visualization based on 3 dimensional information which undergone the 1st manufacture process within signal processor.
- For more accurate image, it performs separate tasks of soothing the noise or orange peel effect.
Followings show the characteristics of developed module and system.
| Module | Item | Spec. | Comments |
|---|---|---|---|
| Scanner Operator | Controllable dimension | 2 - dimension | X, Y |
| Range | 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 | 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 |
