Searching for more information on the given page I've found:
Note: See the PDS JADE SIS Document for more details on the formats.
Remember, that .dat is not a specific format, but just a string for the file extension. Then .dat means a generic non-standard format. This makes is rather unlikely that a reader in this forum can offer the needed tool for importing the file. Then there are two ways to go:
- Either install python and call it from Matlab.
- Find the "PDS JADE SIS Document" with the exact definition of the format (this is your turn, not the one of the readers in the forum). If the format is trivial, some fread commands will solve the problem. It is is complicated, some more work is required. In case of trouble you could hire a programmer.