1. Henrik Forstén佬的nb项目
1.1. 无人机SAR
https://hforsten.com/homemade-polarimetric-synthetic-aperture-radar-drone.html
后续更新https://hforsten.com/synthetic-aperture-radar-autofocus-and-calibration.html
参考的无人机SAR文章
1.2. 6GHz脉冲压缩雷达
https://hforsten.com/homemade-6-ghz-pulse-compression-radar.html
1.3. 地面SAR雷达
https://hforsten.com/synthetic-aperture-radar-imaging.html
后续更新
https://hforsten.com/backprojection-backpropagation.html
1.4 地面SAR的硬件，优化了3版
https://hforsten.com/6-ghz-frequency-modulated-radar.html
https://hforsten.com/homemade-synthetic-aperture-radar.html
https://hforsten.com/third-version-of-homemade-6-ghz-fmcw-radar.html
老哥参考的MIT课程
https://ocw.mit.edu/courses/res-ll-003-build-a-small-radar-system-capable-of-sensing-range-doppler-and-synthetic-aperture-radar-imaging-january-iap-2011/
2.线阵CCD扫描相机32亿像素
https://www.youtube.com/watch?v=KSvjJGbFCws
该项目记录了从头开始构建高分辨率线性扫描相机的过程。
这包括对传感器和定时发生器协议进行逆向工程，开发用于连接它的硬件和低级软件，将其打包成便携式外形和用户界面以供独立使用。
虽然有一些 DIY 项目将 CCD 扫描仪转换为相机，但其中大多数使用原始扫描仪硬件和软件，本质上是将扫描仪打包到一个新外壳中，并用齿轮减少行程范围。
这通常有效，但有一些限制，主要是在分辨率、功能和欺骗原始扫描仪校准方面。
相反，该项目旨在直接与传感器组件连接，并用自定义实现替换原始扫描仪的所有其他组件。
这些扫描仪中使用的传感器是 12 线（RGB x2x2 主线+副线）ILX561K CCD，总像素为 122,400，与 S7R77S14F00A100 ADC+时钟生成芯片一起使用。
通过使用所有线条呈现，使用中画幅 6x7 镜头可以实现超过 3.2 GB 像素 （~80000x40160） 和 16b 真彩色的 RGB 图像。
项目网址
https://hackaday.io/project/202945-project-gigapixel-linear-ccd-camera
https://github.com/Ultrawipf
扫描仪原理图
除此之外，视屏中提到另一个项目，通过旋转线阵相机来实现全景相机的功能
idea：可能也能通过机内的旋转平面反射镜实现扫描？
3.全画幅无反CCD
Sitina 1
Open-source 35mm full-frame (36mm x 24mm) CCD mirror-less interchangable lens camera (MILC). The original goal of this project was to create a digital camera back to convert SLR cameras to DSLR cameras, but has since changed to build a full MILC.
I have made 2 videos about this project:
First video in 2023 (r0.6 hardware): https://www.youtube.com/watch?v=Ma9FrN5COIo
【自制一台全画幅CCD无反相机】 https://www.bilibili.com/video/BV1F8411d7Wu/?share_source=copy_web&vd_source=1735967fff393ffa3d39f23c1c1f2362
Second video in 2024 (r0.11-B hardware): https://www.youtube.com/watch?v=OkfzjmY9cF8
【自制台世界上画质最烂的全画幅无反】 https://www.bilibili.com/video/BV1xipneJENk/?share_source=copy_web&vd_source=1735967fff393ffa3d39f23c1c1f2362
Join discussion if you wish: https://discord.gg/2zAJycbpU5
Specifications
The following are preliminary.
Hardware
SoC: Xilinx Zynq 7010 (2x667MHz Cortex-A9, 28K logic cells FPGA)
RAM: 512MB 16-bit DDR3 SDRAM
AFE: Analog Devices AD9990
Sensor: Kodak/ONsemi KAI-11000/KAI-11002
Screen: 3.4" 480x480 High-Brightness DSI IPS LCD
External Ports:
SD slot (HS, 25MB/s)
USB Type-C (5V3A power supply)
Flash sync terminal
Camera Features
The following are possible with hardware, but not necessarily supported by the current software.
Sensor Type: 35mm Interline CCD sensor
Sensor Size: 36.0 x 24.0 mm
Effective Pixels: 10.7MP
Lens Mount: Active E mount
Still Resolutions:
4008x2672 10.7MP 3:2
3563x2672 9.5MP 4:3 1.08X crop
2672x2672 7.1MP 1:1 1.27X crop
2782x1856 5.2MP 3:2 APS-C crop
2676x2007 5.4MP 4:3 APS-C crop
2365x2365 5.6MP 1:1 APS-C crop
Still Format:
DNG (10/12/14-bit lossless compressed RAW)
JPEG
Readout Speed:
4008x2672 up to 5FPS
4008x480 at 28FPS (line skipping live view, rescaled to 480x320 for output)
Video recording is not supported
ISO: 100 to 6400 (color version)