mrtk_ppp_ar.h

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/*------------------------------------------------------------------------------
 * mrtk_ppp_ar.h : PPP ambiguity resolution functions
 *
 * Copyright (C) 2026 H.SHIONO (MRTKLIB Project)
 * Copyright (C) 2023-2025 Cabinet Office, Japan
 * Copyright (C) 2024-2025 Lighthouse Technology & Consulting Co. Ltd.
 * Copyright (C) 2023-2025 Japan Aerospace Exploration Agency
 * Copyright (C) 2023-2025 TOSHIBA ELECTRONIC TECHNOLOGIES CORPORATION
 * Copyright (C) 2015- Mitsubishi Electric Corp.
 * Copyright (C) 2014 Geospatial Information Authority of Japan
 * Copyright (C) 2014 T.SUZUKI
 * Copyright (C) 2007-2023 T.TAKASU
 *
 * SPDX-License-Identifier: BSD-2-Clause
 *----------------------------------------------------------------------------*/
/**
 * @file mrtk_ppp_ar.h
 * @brief MRTKLIB PPP Ambiguity Resolution Module.
 *
 * This header provides the PPP ambiguity resolution function using
 * integer least-squares estimation (ILS) with the LAMBDA/MLAMBDA method.
 *
 * @note Functions declared here are implemented in mrtk_ppp_ar.c.
 */
#ifndef MRTK_PPP_AR_H
#define MRTK_PPP_AR_H
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include "mrtklib/mrtk_context.h"
#include "mrtklib/mrtk_foundation.h"
#include "mrtklib/mrtk_nav.h"
#include "mrtklib/mrtk_obs.h"
#include "mrtklib/mrtk_rtkpos.h"
 
/**
 * @brief Ambiguity resolution in PPP.
 * @param[in]     ctx   Runtime context (NULL = use global)
 * @param[in,out] rtk   RTK control/result struct
 * @param[in]     obs   Observation data
 * @param[in]     n     Number of observation data
 * @param[in,out] exc   Satellite exclusion flags
 * @param[in]     nav   Navigation data
 * @param[in]     azel  Azimuth/elevation angles (rad)
 * @param[in,out] x     Float states
 * @param[in,out] P     Float covariance
 * @return Status (0: no resolution, 1: success)
 */
int ppp_ar(mrtk_ctx_t* ctx, rtk_t* rtk, const obsd_t* obs, int n, int* exc, const nav_t* nav, const double* azel,
           double* x, double* P);
 
#ifdef __cplusplus
}
#endif
 
#endif /* MRTK_PPP_AR_H */