Commit Graph

24 Commits

Author SHA1 Message Date
dennis.sheirer
ae0568ff3b Updated spectral display to used dBm scale and removed baseline/amplification items.
Updated sample handling code to use -1.0 to 1.0 float values throughout, to support P25 decoder and symbol filter.
2014-11-01 17:39:06 +00:00
dennis.sheirer
5e7c8a8a57 AM Decoder final commit. Includes automatic gain control on baseband input and audio output. 2014-10-31 16:58:09 +00:00
dennis.sheirer
d34abdd2fa Refactoring to use COMPLEX and REAL sample terms throughout 2014-10-31 13:58:20 +00:00
dennis.sheirer
34268f32b3 Resolved issue with parsing/display of LTR-Net channel frequencies. Channel frequency is a 2-part message and we were only calculating/displaying the frequency for one of the messages. 2014-10-31 09:41:17 +00:00
dennis.sheirer
d1ab661754 Frequency limit for Automatic Frequency Control to prevent the controller from walking too far.
Defaults to a maximum of 3kHz, but can be set to as high as 15 kHz.
2014-10-26 22:36:06 +00:00
dennis.sheirer
e61c3a891c Memory/CPU performance improvement and Audio/Mixer source restructuring
Converted to use float primitives and to keep samples in buffer format until the sample rate is decimated to 48kHz.  
Added new non-recursive, CIC decimation filter -- untested

Updated sound card/mixer input source management.  Now testing for mono/stereo support for each card and limiting channel choices accordingly.  Separated the mixersource into a ComplexMixer and and SimplexMixerSource.  The ComplexMixer is used for sound card based tuners like the funcube.  The SimplexMixerSource is used for demodulated sound card inputs.

Interfaces for sample handling - standardized on using 'Complex' to indicate I/Q samples and 'Simplex' to indicate demodulated float samples.  The processing chain now accepts either a decimated (48k) list of complex samples from a tuner channel source, or a 48k simplex buffer (array of demodulated float samples).

Resolved issue with HackRF tuner not applying tuner configuration information.
2014-10-26 10:11:30 +00:00
dennis.sheirer
5f4e7652bd HackRF - final check-in. Changed all tuners to use the low-level API of the usb4java library to resolve limitation in high-level API that constrains maximum sample rate to ~2.0 MHz. Added console logging to logback. 2014-10-20 23:09:50 +00:00
dennis.sheirer
61ecb5abf2 Adds an AM Demodulator to the list of available decoders. 2014-10-11 18:00:49 +00:00
dennis.sheirer
e441ebf0c9 Changed to slf4j logging framework
Enhanced error handling/logging in RTL2832 eeprom device descriptor read method for troubleshooting issue present in some R820T tuners.
2014-09-20 10:04:04 +00:00
dennis.sheirer
5a4fc6690a Resolved minor issue with LTR channel state threading conflict. Added additional error handling/logging for R820T tuner startup, possibly related to reading the EEPROM contents on startup. 2014-09-19 12:31:02 +00:00
dennis.sheirer
ad456d81a3 Updated Call Event handling/display for all decoders and updated channel display values for all decoders.
- Call events now show start-stop timestamps.  (or START-In Progress if call is ongoing )
 - Call start/stop events are now on the same event line.
 - Channel panels now display site and/or channel info
 - LTR call events are limited to CALLs on the current LCN, in order to cut down on false call events resulting from noise.
 - Passport display channels now show site/channel.
 - Changed default window used by the DFTProcessor to Cosine, which doesn't have as much FFT bin leakage.
2014-09-15 00:42:20 +00:00
dennis.sheirer
0f43c7ed22 Automatic Frequency Control enhancement. Provides default AFC and ability to disable in the Decoder tab of each channel. Spectral display includes visual indicators of frequency center (grey) and current AFC offset (yellow). 2014-09-11 22:46:05 +00:00
dennis.sheirer
5ddf538e2a MPT1327 SDM - fixed message display issue. 2014-09-06 11:19:49 +00:00
dennis.sheirer
5c2ff83183 MPT1327 - added SDM parsing for ASCII, BCD, Binary, TELEX, Map27, etc. 2014-09-06 11:13:58 +00:00
dennis.sheirer
c27fee97a4 MPT1327 updates to correctly decode radio registration, serial number interrogation and other AHYC requests. 2014-09-01 10:10:39 +00:00
dennis.sheirer
0eddada70e French MPT1327 fixes. Discovered that entire bit stream is inverted, and system is using SYNC (0xB433) and SYNT (0x4BCC) sync patterns. 2014-08-06 01:24:26 +00:00
dennis.sheirer
63de9c6d7d MPT1327 - adds sync pattern for French variant of MPT1327. Channel decode configuration editor now contains a combo box that allows selection of normal or French variant. 2014-08-04 00:06:00 +00:00
dennis.sheirer
44faeb9351 IQ recording file playback partial checkin.
NOTE: only the gui components and settings handling have been implemented.  Actual recording playback is not yet implemented.

Partial checkin of initial P25 decoder development.  

NOTE: P25 decoder is not yet functional.
2014-08-02 15:16:12 +00:00
dennis.sheirer
35a2cebe03 Converted frequency to long primitive type (from integer) in anticipation of HackRF support which requires frequencies greater than 2.147 GHz, which is the max hertz value that can be represented by an integer primitive. 2014-07-08 14:40:11 +00:00
dennis.sheirer
26d3c12eda Added instrumentation to the LTR-Net decoder. 2014-05-06 13:19:24 +00:00
dennis.sheirer
14ab0f1a42 Resolved issue with NullPointerException when trying to run LTR or LTR-Net decoder from sound card mixer source. 2014-05-04 17:23:16 +00:00
dennis.sheirer
30f14e735f Resolved issue with LTR-Net talkgroup alias labels not displaying in the Activity Summary. 2014-05-02 12:41:38 +00:00
dennis.sheirer
da1db8a804 Improved LTR FSK decoder for LTR, LTR-Net and Passport decoders. Added IIR DC blocking filter and used improved slicer from the FSK decoder.
Added instrumentation to Passport decoder and updated some of the instrumentation components.
2014-05-01 23:24:51 +00:00
dennis.sheirer
3dfedcf8d1 Initial code check in continued 2014-04-26 19:48:24 +00:00