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Robin Getz
b834b80f05
Fix an incorrect bit shift when decoding aircraft registration markings from BDS 2,1 Comm-B messages. Coverity (CID 649088) reported that the expression '(data[7] & 0x1) >> 3' always evaluates to zero, causing one bit of the 6-bit character value to be discarded. The BDS 2,1 aircraft registration marking format encodes seven 6-bit characters. Based on the bit layout defined in ICAO Doc 9871 (Technical Provisions for Mode S Specific Services) and verified against independent implementations such as pyModeS/rs1090, the remaining bit from data[7] is the most significant bit of the character and must be shifted left, not right. Update the extraction to preserve this bit when combining it with the remaining bits from data[8]. Signed-off-by: Robin Getz <rgetz503@gmail.com>
SDRangel is an open-source Qt5 / OpenGL 3.0+ SDR and signal analyzer frontend to various hardware.
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Ancillary projects
- SDRangelcli is a web application that can be used to control a headless (server flavor) instance of SDRangel. It can also be used as a remote control for the GUI flavor.
- SDRangel-Docker is a collection of Docker files and scripts to facilitate building and running SDRangel in a Docker container. Works for either the GUI (only on a Linux host) or the server.