Geo2Rdr.h

#pragma once
 
#include <optional>
#include <isce3/core/forward.h>
 
#include <isce3/core/Common.h>
#include <isce3/core/LookSide.h>
#include <isce3/error/ErrorCode.h>
 
namespace isce3 { namespace geometry { namespace detail {

struct Geo2RdrParams {
    double threshold = 1e-8;

    int maxiter = 50;

    double delta_range = 10.;
};

template<class Orbit, class DopplerModel>
CUDA_HOSTDEV isce3::error::ErrorCode
geo2rdr(double* t, double* r, const isce3::core::Vec3& llh,
        const isce3::core::Ellipsoid& ellipsoid, const Orbit& orbit,
        const DopplerModel& doppler, double wvl, isce3::core::LookSide side,
        double t0, const Geo2RdrParams& params = {});
 

inline constexpr double DEFAULT_TOL_AZ_TIME = 1e-7;

struct Geo2RdrBracketParams {
    double tol_aztime = DEFAULT_TOL_AZ_TIME;

    std::optional<double> time_start = std::nullopt;

    std::optional<double> time_end = std::nullopt;
};

template<class Orbit, class DopplerModel>
CUDA_HOSTDEV isce3::error::ErrorCode
geo2rdr_bracket(double* aztime, double* range,
        const isce3::core::Vec3& x, const Orbit& orbit,
        const DopplerModel& doppler, double wvl, isce3::core::LookSide side,
        const Geo2RdrBracketParams& params = {});
 
}}} // namespace isce3::geometry::detail
 
#include "Geo2Rdr.icc"