CHANGELOG.md

Change Log

PRIDE PPP-AR version 3

2024-09-08 (v3.0)

• lib & tedit: use DOCB block in BIAS-SINEX file to decide whether reset ambiguity at midnight
• otl: enable self-computed ocean tide loading correction in case of no oceanload coefficients for user stations
• lsq: add a function to support random walk constraint between epochs in position domain (P mode)

2024-04-08 (v3.0)

• lib & spp: enable multi-day processing of non-consecutive daily RINEX files
• tedit: improve implementation of loose editing for kinematic positioning
• lsq: reduce the weight of GLONASS pseudorange observations to improve multi-GNSS positioning performance

2024-02-08 (v3.0)

• Employ the latest WUM0MGXRTS products to perform all-frequency PPP-AR on GNSS data with hours latency
  • Real-time archived from Wuhan University GPS/Galileo/BDS phase bias stream and updated every 3 hours
• lib & spp: fix bug for unexpected termination in multi-day processing

2023-12-13 (v3.0)

• pdp3: add IGN FTP site ftp://igs.ign.fr/pub/igs/products/mgex/ to GNSS product download path
• pdp3: refine the procedures for ambiguity resolution when missing code/phase biases for some satellites

2023-11-24 (v3.0)

Release of PRIDE PPP-AR v3.0

• Enable all-frequency PPP-AR on any dual-frequency ionosphere-free combinations
  • pdp3: add -frq option to choose the signal frequencies for each GNSS
  • pdp3: add verification for the availability of observations and code/phase OSBs
• Employ the latest WUM0MGXRAP products to resolve ambiguities on new GNSS signals
  • Rapid all-frequency phase clock/bias products from Wuhan Univeristy
  • Support ambiguity resolution on GPS L1/L2/L5, Galileo E1/E5a/E6/E5b/E5, BDS B1C/B1I/B2a/B3I/B2
  • Append satellite orbit, clock, and quaternion records at the second midnight
  • Align phase clock/bias across consecutive days to mitigate day-bounday discontinuities
• Support precise orbit determination for LEO satellites
  • pdp3: add L positioning mode for kinematic orbiting of LEO satellites
  • table: add processing scripts for GRACE and GRACE-FO, other LEO satellites can be integrated manually
  • table: add setting LEO quaternions in config_template to specify attitude products for LEO satellites
• Improve capability and long-term consistency of multi-day processing
  • Enhance capability of multi-day processing to 108 days
  • Enable establishing integer-ambiguity constraints across midnights with aligned GNSS products to mitigate day-boundary discontinuities in the result
  • table: add setting Truncate at midnight in config_template to set whether to truncate ambiguities at the day boundaries
• Provide more command-line options and models for parameter estimation
  • pdp3: add -r option to choose WNO/STO model for receiver clock estimation
  • pdp3: add -h option to choose NON/PWC/STO model for HTG estimation
• Increase compatibility with the latest IGS data and product extensions
  • Support observation data and broadcast ephemerides in RINEX 4
  • lib: fix bug for not reading interspersing AR and AS clock records
  • lib: fix bug for not reading time-varying OSB estimates and their gradients
  • lib: fix bug for not reading non-16-digit quaternions
• Refine the data format of result files and the output information of program runs
  • Add header information (antenna, PCO, frequency selection, positioning mode, etc.) in result files
  • Increase the number of digits in kin file and res file
  • pdp3: add -v option to output detailed information from arsig and lsq
  • xyz2enu: output RMS instead of STD when reference coordinates are specified

Special notes for compatibility with older versions of PRIDE PPP-AR:

1. pdp3_mac.sh has been integrated into pdp3.sh
2. Older versions of PRIDE PPP-AR cannot recognize the new namings of WUM0MGXRAP and WUM0MGXRTS products
3. Older versions of PRIDE PPP-AR cannot read the new settings in configuration file
4. Older versions of PRIDE PPP-AR cannot read the new format in result files

PRIDE PPP-AR version 2

2023-09-28 (v2.2)

• pdp3: specify the language/region setting to en_US.UTF-8 to prevent problems with decimal comma
  • please contact us if you still encounter problems in your region
• pdp3: support new GIM products for 2nd ionospheric corrections from 2022/330
• pdp3: fix bug for not recognizing some RINEX observation files
• lib: fix bug for reading multi-day quaternions
• lib: improve the substitution rules for missing multi-GNSS PCOs/PCVs
• spp & tedit: fix bug for not processing BDS-only observations
• table: disable BDS GEO satellites in config_template by default to enhance processing quality

2023-02-14 (v2.2)

• Add IGS20 compatilibility with new ANTEX file, SINEX file, and APC_MODEL keyword
• pdp3: reduce the minimum processing time range for loose editing to 30.0 seconds
• pdp3: allow manual specification of priori station coordinates in sit.xyz in F mode
• lib: apply complete APC corrections on the Melbourn-Wubbena combination instead of approximate ones
• lib: fix bug for not reading BDS B1I observations from RINEX 3.02 format
• lib: fix bug for not reading zero biases from code/phase OSB product
• table: add igs20_2247.atx for products in IGS20 reference frame

2022-11-21 (v2.2)

• Change default products from CODE to IGS2R03FIN for dates between 1995 and 2020
  • IGS Repro3 combination products that supprot PPP from 1995 and PPP-AR from 2000
• pdp3: increase the number of decimal digits in time range to 3
• table: add igsR3_2135.atx for Repro3 products, remove M14.ATX for CODE products

2022-10-28 (v2.2)

• pdp3: extend maximum processing interval to 300.0 seconds
• pdp3: correct syntax errors in output
• spp: match the timestamp of initial coordinates with observations
• lsq: fix potential fatal issues caused by rounding errors

2022-06-20 (v2.2)

• install.sh: add warnings for improper installation operations
• pdp3: add OFFLINE mode to avoid calling wget in an off-line computer
• pdp3: fix bug for corrupting IGS ANTEX file in batch processing
• pdp3: fix bug for unexpected termination in multi-day processing
• pdp3: enhance capability of multi-day processing to 32 days
• spp: support SA mode for dates before 2000

2022-05-07 (v2.2)

• install.sh: allow default table directory to be set outside /home
• pdp3: enhance compatibility of RINEX observation file naming
• pdp3: support file paths with spaces
• pdp3: support older versions of wget (without --show-progress)
• table: add M14.ATX for CODE products

2022-04-07 (v2.2)

Release of PRIDE PPP-AR v2.2

• Change command-line script name from pride_pppar to pdp3
• Redesign interactions with command-line interface without fixed arguments
• Employ WUM0MGXRAP products from Wuhan University for dates from 2020
  • Rapid multi-GNSS satellite orbit, clock, bias, quaternion, and ERP products from Wuhan University
  • Apply code/phase OSB products in Bias-RINEX format instead of DCB products
• Employ *WUM0MGXRTS products from Wuhan University for ultra-rapid processing
• Support continuous multi-day processing up to 5 days
• Release a GUI version for Windows/MacOS with interactive plotting functions
• Add src/utils/pbopos to convert pos file to PBO GPS Time Series Format
• table: add config_template to save command-line settings
• table: add leap.sec to synchronize leap seconds from IERS
• table: replace glonass_chn with sat_parameters

2021-09-06 (v2.1)

Release of PRIDE PPP-AR v2.1

• Support satellite attitude quaternion products

2021-05-21 (v2.0)

Release of PRIDE PPP-AR v2.0

• Support Multi-GNSS: GPS, GLONASS, Galileo, BDS-2/3, QZSS

PRIDE PPP-AR version 1

2019-12-15 (v1.4)

• install.sh: add install tips for src/lib/libpridepppar.so
• pride_pppar: fix known bugs & add error replay for debug
• table: update jpleph_de405 (valid until 2040-007)

2019-09-05 (v1.4)

• pride_pppar: fix small bugs

2019-07-16 (v1.4)

• Add function: receiver clock jump check & recover
• Print table valid time by pride_pppar
• Enhance compatibility of pride_pppar

2019-07-12 (v1.3)

• Support rapid phasebias product

2019-06-01 (v1.3)

• Add src/utils/xyz2enu

2019-05-23 (v1.3)

• Enable auto-selection of IGS ANTEX file
• Change defult SP3 products from COD to WHU for the dates since 2019

2019-05-01 (v1.2)

• Support VMF1

2019-04-03 (v1.1)

• Fix small bugs
• Fix bug for high-rate computation
• Support RINEX-3
• Support Linux-32 system (src/lib/shard/linux-32)
• Support Mac OS system (src/lib/shard/mac)

2019-03-21 (v1.0)

Release of PRIDE PPP-AR v1.0